I install 9.0-BETA3 i386, set next rc.conf configurations:
mail# grep -E "hostname|ifconfig" /etc/rc.conf
ifconfig_em0="inet 91.227.17.15 netmask 255.255.255.0"
hostname="mail.AeroStarContract.ru"
mail#
after reboot with plugged LAN cable, I have this strange network
configuration:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet 127.0.0.1 netmask 0xff000000
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a4
inet 91.227.16.17 netmask 0xff000000 broadcast 91.227.16.17
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a5
inet 91.227.16.17 netmask 0xff000000 broadcast 91.227.16.17
media: Ethernet autoselect
status: no carrier
ipfw0: flags=8801<UP,SIMPLEX,MULTICAST> metric 0 mtu 65536
if I unplug network cable and reboot - network configurations is correct:
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a4
inet 91.227.17.15 netmask 0xffffff00 broadcast 91.227.17.255
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
em1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a5
media: Ethernet autoselect
status: no carrier
ipfw0: flags=8801<UP,SIMPLEX,MULTICAST> metric 0 mtu 65536
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet 127.0.0.1 netmask 0xff000000
91.227.16.17 - is IP for DNS A record for mail.AeroStarContract.ru
if I run /etc/rc.d/netif start with plugged cable - network
configurations reset to first listing. If cable unplugged - to second.
if I change hostname to non-existent:
mail# grep -E "hostname|ifconfig" /etc/rc.conf
ifconfig_em0="inet 91.227.17.15 netmask 255.255.255.0"
hostname="mail.AeroStarContract-bad.ru"
mail#
reboot with/without LAN cable get good network configurations.
change A DNS record for "mail.AeroStarContract.ru" from 91.227.16.17 to
91.227.16.27 get this configurations, with plugged cable:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet 127.0.0.1 netmask 0xff000000
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a4
inet 91.227.16.27 netmask 0xff000000 broadcast 91.227.16.27
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a5
inet 91.227.16.27 netmask 0xff000000 broadcast 91.227.16.27
media: Ethernet autoselect
status: no carrier
ipfw0: flags=8801<UP,SIMPLEX,MULTICAST> metric 0 mtu 65536
with unplugged - all correct.
setting A record to 91.227.17.15 (as in rc.conf) get this, with plugged
cable:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet 127.0.0.1 netmask 0xff000000
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a4
inet 91.227.17.15 netmask 0xff000000 broadcast 91.227.17.15
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
ether 00:30:48:71:11:a5
inet 91.227.17.15 netmask 0xff000000 broadcast 91.227.17.15
media: Ethernet autoselect
status: no carrier
ipfw0: flags=8801<UP,SIMPLEX,MULTICAST> metric 0 mtu 65536
with unplugged - all correct.
=============
DNS zone AeroStarContract.ru use our DNS servers, used in resolv.conf:
mail# more /etc/resolv.conf
nameserver 91.227.16.10
nameserver 91.227.17.11
mail#
I think, it try find hostname in DNS (DNS server in some network with
server) and use finded IP to set all interfaces. It's serious mistake,
because I find it when server first booting and set to interface IP used
in another server =))
All names, IP addresses and another information - is real.
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