freebsd-net
- tcpdump and ipsec
- From: Eric W. Bates
- news day
- From: Selene Brogden
- bsnmp with vlan, no speed values are set
- From: Thomas
- Re: OT - Quagga/CARP
- From: Dima Dorfman
- news day
- From: Max Thode
- Re: Is there an API for ipfw?
- From: Takashi Okumura
- Re: Is there an API for ipfw?
- From: Julian Elischer
- Re: Is there an API for ipfw?
- From: Bruce M Simpson
- Re: Is there an API for ipfw?
- From: Luigi Rizzo
- Is there an API for ipfw?
- From: Mikhail Teterin
- Re: OT - Quagga/CARP
- From: Michael DeMan
- Re: OT - Quagga/CARP
- From: Michael DeMan
- Notification of e-gold account update
- From: AccountRobot_donotreply
- Re: IPMI and bge (again)
- From: Doug Ambrisko
- Re: news good
- From: Cort Longwell
- Re: IPMI and bge (again)
- From: Doug Ambrisko
- Re: 802.3ad?
- From: Richard A Steenbergen
- Re: REMINDER: Re: HEADS UP: network stack and socket hackery over the next few weeks (fwd)
- From: Robert Watson
- Re: ng_netflow documentation
- From: David Duchscher
- Re: IPMI and bge (again)
- From: Doug Ambrisko
- Re: 802.3ad?
- From: Andrew Thompson
- Re: 802.3ad?
- From: Brad
- Re: IPMI and bge (again)
- From: Oleg Bulyzhin
- Re: IPMI and bge (again)
- From: Oleg Bulyzhin
- Re: IPMI and bge (again)
- From: Oleg Bulyzhin
- 802.3ad?
- From: Baldur Gislason
- Re: IPMI and bge (again)
- From: Doug Ambrisko
- Re: IPMI and bge (again)
- From: Oleg Bulyzhin
- IPMI and bge (again)
- From: Stephen P. Cravey
- Re: Interface groups (from OpenBSD)
- From: Brooks Davis
- Interface groups (from OpenBSD)
- From: Max Laier
- RE: PAM + radius
- From: Alexandre DELAY
- Re: PAM + radius
- From: Vince Hoffman
- Re: net.link.ether.inet.proxyall
- From: Ruslan Ermilov
- PAM + radius
- From: Aymeric MUNTZ
- Re: requests for mbufs denied
- From: Kazuaki Oda
- net.link.ether.inet.proxyall
- From: Jon Otterholm
- Current problem reports assigned to you
- From: FreeBSD bugmaster
- [braden@ISI.EDU: Re: [e2e] Can we revive T/TCP ?]
- From: Barney Wolff
- Re: Intel 3945ABG with NDIS
- From: Fabian Keil
- PPP + Radius pbm
- From: Alexandre DELAY
- PPP + Radius pbm
- From: Aymeric MUNTZ
- Re: Intel 3945ABG with NDIS
- From: Wesley Morgan
- Problem in net-snmp 5.2.x.
- From: czhao
- Re: net.link.ether.bridge.config effeciency for more then 2 interfaces? [solved of sorts]
- From: Andrew Seguin
- Re: New version of iwi(4) - Call for testers [regression!]
- From: Max Laier
- Re: New version of iwi(4) - Call for testers [regression!]
- From: Max Laier
- Re: New version of iwi(4) - Call for testers [regression!]
- From: Max Laier
- Re: Intel 3945ABG with NDIS
- From: Fabian Keil
- Intel 3945ABG with NDIS
- From: Wesley Morgan
- RE: Which NIC is better: fxp or dc?
- From: No@SPAM@mgEDV.net
- Which NIC is better: fxp or dc?
- From: Dmitry Pryanishnikov
- Re: Non dropping packet monitor
- From: Chuck Swiger
- Re: OT - Quagga/CARP
- From: Dima Dorfman
- Re: Non dropping packet monitor
- From: Phil Regnauld
- Re: Non dropping packet monitor
- From: Charles Swiger
- Non dropping packet monitor
- From: Paul Haddad
- Problems - page fault in kernel, whilst running dhclient
- From: Josef Karthauser
- Re: How do you keep users from stealing other user's ip??
- From: Atanas Yankov
- Re: How do you keep users from stealing other user's ip??
- From: Duane Whitty
- Re: How do you keep users from stealing other user's ip??
- From: Eygene Ryabinkin
- Re: How do you keep users from stealing other user's ip??
- From: Eygene Ryabinkin
- Re: How do you keep users from stealing other user's ip??
- From: Jon Otterholm
- Re: How do you keep users from stealing other user's ip??
- From: Sten Daniel Sørsdal
- Re: How do you keep users from stealing other user's ip??
- From: Eygene Ryabinkin
- How do you keep users from stealing other user's ip??
- From: Mark Jayson Alvarez
- Re: FreeBSD as a VPN Client Gateway ...
- From: Eric Masson
- Re: How can i detect if a received UDP got fragmented from userland?
- From: Sten Daniel Sørsdal
- Re: lo0 not starting on boot
- From: Vitaly Bogdanov
- Re: lo0 not starting on boot
- From: Luigi Rizzo
- Re: lo0 not starting on boot
- From: Brooks Davis
- Re: lo0 not starting on boot
- From: Luigi Rizzo
- Re: lo0 not starting on boot
- From: Paul Schmehl
- net.link.ether.bridge.config effeciency for more then 2 interfaces?
- From: Andrew Seguin
- Re: lo0 not starting on boot
- From: Brooks Davis
- Re: FreeBSD as a VPN Client Gateway ...
- From: Eric Masson
- Re: FreeBSD as a VPN Client Gateway ...
- From: VANHULLEBUS Yvan
- Re: FreeBSD as a VPN Client Gateway ...
- From: Eric Masson
- lo0 not starting on boot
- From: Paul Schmehl
- Re: FreeBSD as a VPN Client Gateway ...
- From: David Rhodus
- Re: FreeBSD as a VPN Client Gateway ...
- From: Bruce M Simpson
- Re: IPv6 neighbor discovery with static addresses
- From: Hajimu UMEMOTO
- Re: i386/94852: Cannot install 6.1 from either Beta1 or Beta4
- From: FreeBSD-gnats-submit
- Re: Loopback problem
- From: Paul Schmehl
- Loopback problem
- From: Paul Schmehl
- FreeBSD as a VPN Client Gateway ...
- From: Matthew Grooms
- RE: requests for mbufs denied
- From: Gabor MICSKO
- RE: requests for mbufs denied
- From: Peter Blok
- requests for mbufs denied
- From: Gabor MICSKO
- IPv6 neighbor discovery with static addresses
- From: Kevin Oberman
- Re: racoon config trouble
- From: VANHULLEBUS Yvan
- racoon config trouble
- From: Eric W. Bates
- Re: How can i detect if a received UDP got fragmented from userland?
- From: Bruce M Simpson
- Re: static routes
- From: Ludovit Koren
- Re: Low network performance after upgrade from FreeBSD 4.8 to 6.0
- From: Bohuslav Plucinsky
- Re: multiple routing tables
- From: Ragnar Lonn
- Re: multiple routing tables
- From: Milan Obuch
- Re: multiple routing tables
- From: Ragnar Lonn
- Re: How can i detect if a received UDP got fragmented from userland?
- From: Andre Oppermann
- Re: static routes
- From: Sten Daniel Sørsdal
- Re: New version of iwi(4) - Call for testers [regression!]
- From: Darren Pilgrim
- How can i detect if a received UDP got fragmented from userland?
- From: Sten Daniel Sørsdal
- Re: IP_SENDIF?
- From: Bruce M Simpson
- Re: New version of iwi(4) - Call for testers [regression!]
- From: Max Laier
- Re: IP_SENDIF?
- From: Dave Cornejo
- Re: New version of iwi(4) - Call for testers [regression!]
- From: Darren Pilgrim
- Re: multiple routing tables
- From: Andre Oppermann
- Re: IP_SENDIF?
- From: Andre Oppermann
- Re[2]: New version of iwi(4) - Call for testers [regression!]
- From: dima
- Re: Low network performance after upgrade from FreeBSD 4.8 to 6.0
- From: Kris Kennaway
- RELENG_6: IPFilter appears to leak active IP states, leading to blocked traffic
- From: Jos Backus
- Re: Low network performance after upgrade from FreeBSD 4.8 to 6.0
- From: Kris Kennaway
- Question on protocol drain routines
- From: Herve Boulouis
- Re: static routes
- From: Ludovit Koren
- Re: IP_SENDIF?
- From: gnn
- Re: Low network performance after upgrade from FreeBSD 4.8 to 6.0
- From: Martin Hudec
- Re: Low network performance after upgrade from FreeBSD 4.8 to 6.0
- From: OxY
- Low network performance after upgrade from FreeBSD 4.8 to 6.0
- From: Bohuslav Plucinsky
- Re: static routes
- From: Giorgos Keramidas
- static routes
- From: Ludovit Koren
- Current problem reports assigned to you
- From: FreeBSD bugmaster
- IP_SENDIF?
- From: Dave Cornejo
- Re: packet drop with intel gigabit / marwell gigabit
- From: Michael Vince
- Re: PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Max Laier
- Re: multiple routing tables
- From: Ray Mihm
- multiple routing tables
- From: Julian Elischer
- Re: New version of iwi(4) - Call for testers
- From: Darren Pilgrim
- Re: New version of iwi(4) - Call for testers
- From: Sam Leffler
- Re: New version of iwi(4) - Call for testers
- From: Darren Pilgrim
- Re: PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Andrew Thompson
- Re: packet drop with intel gigabit / marwell gigabit
- From: OxY
- Re: packet drop with intel gigabit / marwell gigabit
- From: Bjoern A. Zeeb
- Re: New version of iwi(4) - Call for testers
- From: Guy Helmer
- Re: packet drop with intel gigabit / marwell gigabit
- From: OxY
- Re: packet drop with intel gigabit / marwell gigabit
- From: Kevin Day
- Re: New version of iwi(4) - Call for testers
- From: Max Laier
- Re[2]: New version of iwi(4) - Call for testers
- From: dima
- Re[2]: packet drop with intel gigabit / marwell gigabit
- From: dima
- Re: Wireless sensing function is missing?
- From: Sam Leffler
- Re: packet drop with intel gigabit / marwell gigabit
- From: OxY
- packet drop with intel gigabit / marwell gigabit
- From: OxY
- Re: OT - Quagga/CARP
- From: Michael DeMan
- Re: OT - Quagga/CARP
- From: Michael DeMan
- Re: Wireless sensing function is missing?
- From: Kan Cai
- Re: Wireless sensing function is missing?
- From: Bruce M Simpson
- Welcome to Chase Online
- From: Chase Credit Cards
- Wireless sensing function is missing?
- From: Kan Cai
- Re: New version of iwi(4) - Call for testers
- From: Yann Berthier
- Wireless sensing function is missing?
- From: Kan Cai
- Re: arp_rtrequest
- From: MoonblueZ
- Re: OT - Quagga/CARP
- From: Brad
- Re: OT - Quagga/CARP
- From: Bart Van Kerckhove
- Re: What's up with all the spam on several FreeBSD mailing lists?
- From: Robert Watson
- Re: OT - Quagga/CARP
- From: Brad
- Re: OT - Quagga/CARP
- From: Bart Van Kerckhove
- Re: OT - Quagga/CARP
- From: Bruce M Simpson
- Re: OT - Quagga/CARP
- From: Bart Van Kerckhove
- Re: problem with Marwell gigabit performance
- From: Brad
- Re: OT - Quagga/CARP
- From: Bruce M Simpson
- Re: jumbo em
- From: Brad
- Re: problem with Marwell gigabit performance
- From: OxY
- Re: jumbo em
- From: Jack Vogel
- Re: OT - Quagga/CARP
- From: Bart Van Kerckhove
- Re: OT - Quagga/CARP
- From: Bart Van Kerckhove
- Re: problem with Marwell gigabit performance
- From: Pertti Kosunen
- Re: problem with Marwell gigabit performance
- From: Sten Daniel Sørsdal
- Re: What's up with all the spam on several FreeBSD mailing lists?
- From: Spadge
- Ultra Allure Pheromones guarantees you not only
- From: NINWORKER232
- Re: What's up with all the spam on several FreeBSD mailing lists?
- From: Chuck Swiger
- RE: IPMI During Boot
- From: Matt
- RE: IPMI During Boot
- From: Matt
- jumbo em
- From: Yuriy N. Shkandybin
- What's up with all the spam on several FreeBSD mailing lists?
- From: Ross Finlayson
- 2843ªB¤Í³o¬O§Úªº³¡¸¨®æ
- From: yuanjob140230
- Кaлькуляция себeстоимости прoдукции
- From: Re:
- Re: PharamTRacy news
- From: Siri Thrasher
- Re: OT - Quagga/CARP
- From: Nikos Vassiliadis
- Re[3]:
- From: Crews Weston
- Re: problem with Marwell gigabit performance
- From: OxY
- Re: if_bridge + polling get lower througphts
- From: Chih-Chang Hsieh
- Re: problem with Marwell gigabit performance
- From: Pyun YongHyeon
- OT - Quagga/CARP
- From: Michael DeMan
- Re: You have received a postcard !
- From: Spadge
- Re: IPMI During Boot
- From: Doug Ambrisko
- You have received a postcard !
- From: postcard . com
- Re: problem with Marwell gigabit performance
- From: OxY
- Re: IPMI During Boot
- From: Julian Elischer
- Re: IPMI During Boot
- From: Jack Vogel
- Re: problem with Marwell gigabit performance
- From: OxY
- Re: problem with Marwell gigabit performance
- From: OxY
- Re: New version of iwi(4) - Call for testers
- From: Sam Leffler
- Re: New version of iwi(4) - Call for testers
- From: Joseph Vella
- Re: if_bridge + polling get lower througphts
- From: Iasen Kostov
- Re: if_bridge + polling get lower througphts
- From: Andrew Thompson
- netatm: plan for removal unless an active maintainer is found (fwd)
- From: Robert Watson
- if_bridge + polling get lower througphts
- From: Chih-Chang Hsieh
- Re: IPMI During Boot
- From: Jack Vogel
- Re: New version of iwi(4) - Call for testers
- From: Vladimir Grebenschikov
- Re: IPMI During Boot
- From: Julian Elischer
- Re: IPMI During Boot
- From: Jack Vogel
- Re: New version of iwi(4) - Call for testers
- From: Max Laier
- Re: problem with Marwell gigabit performance
- From: Pyun YongHyeon
- Re: Redirect fec0 to physical NIC
- From: John-Mark Gurney
- IPMI During Boot
- From: Matt
- Redirect fec0 to physical NIC
- From: Shawn Saunders
- RFC kern/94408 (was Re: Two network-related PRs)
- From: Roman Kurakin
- RFC kern/9448 (was Re: Two network-related PRs)
- From: Roman Kurakin
- Two network-related PRs
- From: Eygene Ryabinkin
- problem with Marwell gigabit performance
- From: OxY
- Laptop panics, related to networking after resume. (kern/94380)
- From: Josef Karthauser
- arp_rtrequest
- From: MoonblueZ
- man if_bridge need an improvement
- From: Nikolay Pavlov
- Re: netgraph issue
- From: Julian Elischer
- Re: netgraph issue
- From: sheeda
- netgraph issue
- From: sheeda
- Re: floating a server room... how do you deal with ethernet connections?
- From: Brian Candler
- Re: IPSec and packet filtering in FreeBSD 6.0
- From: VANHULLEBUS Yvan
- Re: floating a server room... how do you deal with ethernet connections?
- From: Chuck Swiger
- IPSec and packet filtering in FreeBSD 6.0
- From: Jonas Bülow
- Current problem reports assigned to you
- From: FreeBSD bugmaster
- Re: Configuring IPsec for Kame MIPv6
- From: Keiichi SHIMA
- Configuring IPsec for Kame MIPv6
- From: Surekha
- floating a server room... how do you deal with ethernet connections?
- From: Nikolas Britton
- Re: IPFW problem
- From: Dennis Olvany
- Re: IPFW problem
- From: Chuck Swiger
- IPFW problem
- From: Dave Johnson
- Re: misc/93220: nd6_lookup: failed to add route for a neighbor
- From: Paul Blazejowski
- Re: ipv6 panic in 6.0 ([kris@FreeBSD.org: kern/85780: 'panic: bogus refcnt 0' in routing/ipv6])
- From: Kris Kennaway
- Re: TCP_COMPAT_42 support
- From: Mike Silbersack
- Re: FAST_IPSEC and tunnelled packets processing
- From: VANHULLEBUS Yvan
- Re: FAST_IPSEC and tunnelled packets processing
- From: gnn
- Re: invalid table number causes ipfw to lock
- From: Nikos Vassiliadis
- Re: kern/93220: [inet6] nd6_lookup: failed to add route for a neighbor
- From: Tilman Linneweh
- Re: FAST_IPSEC and tunnelled packets processing
- From: VANHULLEBUS Yvan
- Re: Carp: checksum failed on em0
- From: Ruben van der Zwan
- Re: Network client is the same from server (solution)
- From: Tiago Cruz
- Re: Carp on vlan with em driver
- From: Gleb Smirnoff
- Re: invalid table number causes ipfw to lock
- From: Gleb Smirnoff
- Re: FreeBSD Port of OpenOSPFD
- From: Gleb Smirnoff
- Re: Carp: checksum failed on em0
- From: Gleb Smirnoff
- Re: invalid table number causes ipfw to lock
- From: Ruslan Ermilov
- Best Firmware for wi(4)? (Re: wi(4) Problems with FreeBSD AP to WinXP)
- From: Crist J. Clark
- Re: FAST_IPSEC and tunnelled packets processing
- From: Sam Leffler
- Carp: checksum failed on em0
- From: Ruben van der Zwan
- Re: vr0: rx packet lost
- From: Andrea Venturoli
- Re: New version of iwi(4) - Call for testers
- From: Uwe Laverenz
- Re: FreeBSD Port of OpenOSPFD
- From: Bjoern A. Zeeb
- ipfw/ip6fw Ipv6 forwarding
- From: Karim Fodil-Lemelin
- Re: FreeBSD Port of OpenOSPFD
- From: Andre Oppermann
- Re: FreeBSD Port of OpenOSPFD
- From: Vlad GALU
- Re: FreeBSD Port of OpenOSPFD
- From: Phil Regnauld
- FreeBSD Port of OpenOSPFD
- From: Florent Thoumie
- Re: FAST_IPSEC and tunnelled packets processing
- From: VANHULLEBUS Yvan
- invalid table number causes ipfw to lock
- From: Nikos Vassiliadis
- if_bridge drops lot of outgoing packets
- From: Artis Caune
- Re: Carp on vlan with em driver
- From: Jan Zorz
- Re: ipv6 panic in 6.0 ([kris@FreeBSD.org: kern/85780: 'panic: bogus refcnt 0' in routing/ipv6])
- From: Bruce Evans
- Re: vr0: rx packet lost
- From: tony sarendal
- Re: TCP_COMPAT_42 support
- From: Julian H. Stacey
- Re: taskqueue for pf periodic events
- From: Max Laier
- Re: TCP_COMPAT_42 support
- From: Mike Silbersack
- Re: Carp on vlan with em driver
- From: Gleb Smirnoff
- FAST_IPSEC and tunnelled packets processing
- From: VANHULLEBUS Yvan
- Re: Carp on vlan with em driver
- From: Christopher McGee
- taskqueue for pf periodic events
- From: Gleb Smirnoff
- Re: if_bridge steals IP address of non-member interface
- From: Nik Lam
- Re: if_bridge steals IP address of non-member interface
- From: Andrew Thompson
- wi(4) Problems with FreeBSD AP to WinXP
- From: Crist J. Clark
- if_bridge steals IP address of non-member interface
- From: Nik Lam
- Re: ipv6 panic in 6.0 ([kris@FreeBSD.org: kern/85780: 'panic: bogus refcnt 0' in routing/ipv6])
- From: Kris Kennaway
- Re: Carp on vlan with em driver
- From: Gleb Smirnoff
- Re: vr0: rx packet lost
- From: Andrea Venturoli
- Re: Carp on vlan with em driver
- From: Yar Tikhiy
- Re: vr0: rx packet lost
- From: Vince Hoffman
- vr0: rx packet lost
- From: Andrea Venturoli
- Re: Carp on vlan with em driver
- From: Christopher McGee
- Re: Carp on vlan with em driver
- From: Yar Tikhiy
- Re: Carp on vlan with em driver
- From: Christopher McGee
- Re: Trying to make a Host into a gigabit hub for testing
- From: Shawn Saunders
- RE: New version of iwi(4) - Call for testers
- From: Darren Pilgrim
- Re: New version of iwi(4) - Call for testers
- From: Max Laier
- Re: which protocols use ip options ?
- From: Chuck Swiger
- Re: Network client is the same from server
- From: Tiago Cruz
- RE: New version of iwi(4) - Call for testers
- From: Joerg Pulz
- which protocols use ip options ?
- From: kamal kc
- Current problem reports assigned to you
- From: FreeBSD bugmaster
- RE: New version of iwi(4) - Call for testers
- From: Darren Pilgrim
- RE: Installation of Freebsd 5.4 release
- From: Surekha
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Nik Lam
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Nik Lam
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Andrew Thompson
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Nik Lam
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Nik Lam
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Andrew Thompson
- Re: configuring if_bridge with stp at boot in /etc/rc.conf
- From: Nik Lam
- New version of iwi(4) - Call for testers
- From: Max Laier
- Double free in icmp6 processing?
- From: Kris Kennaway
- dhclient iwi0 get into crash my laptop
- From: Balgansuren Batsukh
- dhclient iwi0 LOR
- From: Balgansuren Batsukh
- Re: BIND incompatibility
- From: Yar Tikhiy
- Re: BIND incompatibility
- From: Doug Barton
- Re: BIND incompatibility
- From: Eugene Grosbein
- make error :|
- From: Carlos Silva, yourdot-internet.com
- Re: Carp on vlan with em driver
- From: Yar Tikhiy
- Re: ipprecedence ?
- From: Yar Tikhiy
- BIND incompatibility
- From: Yar Tikhiy
- Re: PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Adam McDougall
- Re: PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Adam McDougall
- Re: PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Max Laier
- Re: PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Pieter de Boer
- PR kern/93849 IP checksum broken by pf no-df over bridge
- From: Adam McDougall
- Fast Recovery
- From: vijay singh
- Carp on vlan with em driver
- From: Christopher McGee
- dequeueing outgoing packets on gigabit speed (if_em)
- From: Artis Caune
- Re: SMP NAT
- From: Iasen Kostov
- Re: ipprecedence ?
- From: S.I
- Fw: concern Beatrix
- From: Elisabeth Banks
- Re: SMP NAT
- From: Robert Watson
- Re: iwi stability when doing large file transfers/backups
- From: Sam Leffler
- Re: SMP NAT
- From: Iasen Kostov
- Re: iwi stability when doing large file transfers/backups
- From: damien . bergamini
- SMP NAT
- From: Iasen Kostov
- Re: Installation of Freebsd 5.4 release
- From: Max Laier
- Re: Installation of Freebsd 5.4 release
- From: Marcin Jessa
- Installation of Freebsd 5.4 release
- From: Surekha
- configuring if_bridge with stp at boot in /etc/rc.conf
- From: Nik Lam
- RE: ipprecedence ?
- From: Darren Pilgrim
- Re: iwi stability when doing large file transfers/backups
- From: Luigi Rizzo
- Re: iwi stability when doing large file transfers/backups
- From: Max Laier
- Re: iwi stability when doing large file transfers/backups
- From: Luigi Rizzo
- iwi stability when doing large file transfers/backups
- From: Anders Nordby
- Re: Which motherboards work well with em(4)?
- From: Chris Howells
- Re: freevrrpd and em
- From: Andrea Venturoli
- Re: freevrrpd and em
- From: Vlad GALU
- Re: freevrrpd and em
- From: Andrea Venturoli
- ipprecedence ?
- From: S.I
- Re: freevrrpd and em
- From: spe
- nat issue
- From: Yasholomew Yashinski