Date: Thu, 31 Aug 2006 18:53:22 +0200 From: Hans Nieser <h.nieser@xs4all.nl> To: Sam Leffler <sam@errno.com> Cc: freebsd-net@freebsd.org Subject: Re: iwi discarding oversized packets while mtu=1500 for src/dst Message-ID: <44F71402.1060405@xs4all.nl> In-Reply-To: <44F70983.40705@errno.com> References: <44F4CF17.8060203@xs4all.nl> <44F70983.40705@errno.com>
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Sam Leffler wrote:
> Hans Nieser wrote:
>> Hi,
>>
>> Today I wanted to go back to using FreeBSD on my laptop, which is still
>> installed but hasn't been used for several months because I am still
>> waiting for a stable Intel HDA driver. So I performed a full upgrade of my
>> installed ports. However I ran into an issue that prevented me from
>> logging in to my FreeBSD server over ssh.
...
>> My server's NIC:
>> xl0@pci2:0:0: class=0x020000 card=0x10001458 chip=0x920010b7 rev=0x78
>> hdr=0x00
>> vendor = '3COM Corp, Networking Division'
>> device = '3C905C-TX Fast EtherLink for PC Management NIC'
>> class = network
>> subclass = ethernet
>>
>> Laptop's NIC:
>> iwi0@pci1:3:0: class=0x028000 card=0x27018086 chip=0x42208086 rev=0x05
>> hdr=0x00
>> vendor = 'Intel Corporation'
>> device = 'PRO/Wireless 2200BG Network Connection'
>> class = network
> I see none of the basic info needed to help. OS version? description
> of how the device is setup (e.g. ifconfig cmds) and current
> state--ifconfig iwi0.
Apologies, some extra info as requested (and some ASCII-art because I was
bored!):
The Laptop's WLAN NIC is connected to an AP integrated into my DSL device
(specifically, it's a Thompson SpeedTouch 716WL). My server's NIC is
connected over UTP to the 4-port switch also integrated into the DSL
device. So basically:
_____________
| |
| (Intarwebs) |
|_____________|
|
__|______________________
| ___________________|
| | | |
| DSL | LAN hub | WLAN AP |
|_____|_________|_________|
| |
____|___ | ________
| | | | |
| Server | ~ ~ ~ ~ ~ | Laptop |
|________| |________|
The wireless AP is configured to only allow 802.11g devices and uses
WPA-PSK for security with TKIP encryption.
Laptop setup ---------------------------------------------------------
root@aphax-laptop:~# uname -a
FreeBSD aphax-laptop.lan 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Thu May 11
07:17:09 CEST 2006
root@aphax-laptop.nieser.local:/usr/obj/usr/src/sys/APHAX-LAPTOP i386
root@aphax-laptop:~# ifconfig iwi0
iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::215:ff:fe2b:20ab%iwi0 prefixlen 64 scopeid 0x2
inet 192.168.1.65 netmask 0xffffff00 broadcast 192.168.1.255
ether 00:15:00:2b:20:ab
media: IEEE 802.11 Wireless Ethernet autoselect (OFDM/54Mbps)
status: associated
ssid geendraadjes channel 8 bssid 00:11:f5:ca:50:71
authmode WPA privacy ON deftxkey UNDEF TKIP 2:128-bit txpowmax 100
protmode CTS roaming MANUAL bintval 100
root@aphax-laptop:~# cat /etc/rc.conf | grep -B 4 ifconfig
hostname="aphax-laptop.lan"
network_interfaces="lo0"
#ifconfig_sk0="DHCP"
ifconfig_iwi0="DHCP WPA"
root@aphax-laptop:~# cat /etc/wpa_supplicant.conf
network={
ssid="nieser"
psk="xxxxxxxxxx"
}
network={
ssid="niba"
psk="xxxxxxxxxx"
}
network={
ssid="geendraadjes"
psk="xxxxxxxxx"
}
Server setup ---------------------------------------------------------
root@mishmash:~# uname -a
FreeBSD mishmash.geendraadjes 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Sat May
13 03:02:19 CEST 2006
root@mishmash.geendraadjes:/usr/obj/usr/src/sys/MISHMASH i386
root@mishmash:~# ifconfig xl0
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=9<RXCSUM,VLAN_MTU>
inet6 fe80::20a:48ff:fe0f:40c7%xl0 prefixlen 64 scopeid 0x1
inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
ether 00:0a:48:0f:40:c7
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
root@mishmash:~# cat /etc/rc.conf | grep -B 2 ifconfig
defaultrouter="192.168.1.254"
hostname="mishmash.lan"
ifconfig_xl0="inet 192.168.1.1 netmask 255.255.255.0"
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