ARP: x.x.x.x is on lo0 but got reply from a:b:c...

[Sramek Dalibor]

> Presna hlaska z logu vypada zhruba takto, ze?
> Dec 26 14:09:05 gate /kernel: arp: 192.168.1.2 is on ed0 but got reply
> from 00:00:e8:7d:23:c1 on ed2
> To jsi pripojeny k UPS. Sluzba je to bezkonkurencne levna a relativne
> ok, ale konfigurace jejich site je dost diskutabilni.

Ano, je to tak. (UPC)

> Jinak z tedle hlasky si nic delat nemusis. Proste jenom v providerove
> segmentu site je prirazena stejna IP adresa (intranetova) jako v tve
> lokalni siti a ARP te o tom jenom informuje na masine, ktera funguje
> jako brana mezi temito dvema segmenty. Alespon tak si to vysvetluju ja :-)

Jinymi slovy ma jejich stroj ve verejnem segmentu adresu 192.168.1.1?
Protoze pokud je to tak, tak je budu samozrejme prudit, aby to spravili.

Nicmene mi stejne vrta hlavou proc mi kernel tvrdi, ze mam 192.168.1.1 na
lo0?

Prikladam par diagnostickych vypisu:

ifconfig -a:

lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet6 fe80::200:e8ff:fe45:750e%ed0 prefixlen 64 scopeid 0x2
	inet 62.24.93.5 netmask 0xffffff00 broadcast 62.24.93.255
	ether 00:00:e8:45:75:0e
ed1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
	inet6 fe80::200:b4ff:fe73:7eb%ed1 prefixlen 64 scopeid 0x3
	ether 00:00:b4:73:07:eb
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	inet6 ::1 prefixlen 128
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
	inet 127.0.0.1 netmask 0xff000000
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
faith0: flags=8000<MULTICAST> mtu 1500

Prislusna pasaz z rc.conf:
# Network
ifconfig_ed0="DHCP"
ifconfig_ed1="inet 192.168.1.1  netmask 255.255.255.0"
hostname="ara.domanet.cz"
gateway_enable="YES"
named_enable="YES"
sshd_enable="YES"
sendmail_enable="YES"
inetd_enable="YES"
kern_securelevel_enable="NO"
nfs_reserved_port_only="YES"
nfs_server_enable="YES"

A presne zneni hlasky:
Dec 31 10:08:52 ara /kernel: arp: 192.168.1.1 is on lo0 but got reply from 00:07:50:a0:8f:82 on ed0


> To, jak se zbavit tedle hlasky uz tady konferenci proslo (nekde to snad
> mam i zaarchivovane ).
Jak jsem rikal - vsechno jinak funguje normalne, takze by mi stacilo
potlaceni hlasky, aniz bych musel zahazovat vsechny ostatni.
Take bych ale rad pochopil pricinu tohoto problemu.

Diky

Dalibor Sramek