routing och ip alias
Lars Domesjö
lars at domesjo.com
Wed Feb 27 22:19:12 CET 2008
Du råkar använda ipfw/ipf/pf och lagt till natning på xl0?
tcpdumpat för att se att det skickas ut ok ?
/Lars
Mattias Barthel skrev:
> Hej Busar,
>
> Jag försöker pinga mitt modem från FBSD maskin som har 2 tillsatta IP
> addresser.
> Den första addressen blir tilldelad via dhcp från ISPn. Den andra sätter
> jag själv för att kunna
> kommunicera med modemet. Av någon okänd anledning går detta inte.
>
> Men om jag däremot bara sätter den andra addressen (10.0.0.1) så går det
> utmärkt.
> Varför går detta inte?
>
>
>
> $ arp -a
> modem (10.0.0.138) at 00:15:e9:f9:53:17 on xl0 [ethernet]
> ? (10.255.255.255) at ff:ff:ff:ff:ff:ff on xl0 permanent [ethernet]
> ? (89.131.128.1) at 00:00:5e:00:01:03 on xl0 [ethernet]
> ? (89.131.143.255) at ff:ff:ff:ff:ff:ff on xl0 permanent [ethernet]
> ? (192.168.1.224) at 00:19:db:cc:7e:51 on fxp0 [ethernet]
> ? (192.168.1.230) at 00:16:76:da:ca:7a on fxp0 [ethernet]
> ? (192.168.1.231) at 00:1c:b3:7c:63:b6 on fxp0 [ethernet]
> ? (192.168.1.250) at 00:0a:e6:dd:a9:68 on fxp0 [ethernet]
> ? (192.168.1.253) at (incomplete) on fxp0 [ethernet]
> ? (192.168.1.255) at ff:ff:ff:ff:ff:ff on fxp0 permanent [ethernet]
> $ netstat -rn
> Routing tables
>
> Internet:
> Destination Gateway Flags Refs Use Netif Expire
> default 89.131.128.1 UGSc 9 10355450 xl0
> 10 link#1 UC 2 0 xl0
> 10.0.0.138 00:15:e9:f9:53:17 UHLW 0 10 xl0 1169
> 10.255.255.255 ff:ff:ff:ff:ff:ff UHLWb 2 246 xl0
> 89.131.128/20 link#1 UC 2 0 xl0
> 89.131.128.1 00:00:5e:00:01:03 UHLW 7 0 xl0 453
> 89.131.129.100 127.0.0.1 UGHS 0 31249 lo0
> 89.131.143.255 ff:ff:ff:ff:ff:ff UHLWb 1 220 xl0
> 127.0.0.1 127.0.0.1 UH 3 3163 lo0
> 192.168.1 link#2 UC 6 0 fxp0
> 192.168.1.224 00:19:db:cc:7e:51 UHLW 1 11574 fxp0 654
> 192.168.1.230 00:16:76:da:ca:7a UHLW 3 805452 fxp0 1152
> 192.168.1.231 00:1c:b3:7c:63:b6 UHLW 1 335508 fxp0 938
> 192.168.1.250 00:0a:e6:dd:a9:68 UHLW 0 5270271 fxp0 1139
> 192.168.1.253 link#2 UHLW 1 28 fxp0
> 192.168.1.255 ff:ff:ff:ff:ff:ff UHLWb 3 170 fxp0
> $
> $
> $
> $ ping modem
> PING modem (10.0.0.138): 56 data bytes
> ^C
> --- modem ping statistics ---
> 2 packets transmitted, 0 packets received, 100% packet loss
> $
> $
> $
> $ ifconfig xl0
> xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> inet 89.131.129.100 netmask 0xfffff000 broadcast 89.131.143.255
> inet 10.0.0.1 netmask 0xff000000 broadcast 10.255.255.255
> ether 00:60:08:54:a8:6a
> media: Ethernet autoselect (100baseTX <full-duplex>)
> status: active
> $
>
> _________________________________________________
> BSD Users Sweden -- BUS at stacken.kth.se
> https://lists.stacken.kth.se/mailman/listinfo/bus
>
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