Netmask settings in Solaris 11

UNIX Solaris
1

I have net0 as my primary network interface in Solaris 11.

# ifconfig net0
net0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 10.53.77.154 netmask ffffff00 broadcast 10.53.77.255
        ether 0:10:e0:3a:c4:d8

Its netmask should be fffffc00, but whenever I am rebooting this server, it takes ffffff00.

 # cat /etc/netmasks | grep -v "#"
 #

This is same for other server, which is having good netmask and not changing its netmask. Anywhere else, I need to make changes ?
/etc/defaultrouter is also blank in both servers (working and non-working server)

2

Wht don't you unplumb and plumb the interface with the settings?

ifconfig net0 10.53.77.154 netmask 255.255.252.0 broadcast 10.53.77.255 up

See what error it throws out..

3

What does this show:

ipadm
4

br1an, I can reset netmask with ifconfig, but it comes back to old value after reboot.
bartus11, here it is -->

 # ipadm
NAME              CLASS/TYPE STATE        UNDER      ADDR
lo0               loopback   ok           --         --
   lo0/v4         static     ok           --         127.0.0.1/8
   lo0/v6         static     ok           --         ::1/128
net0              ip         ok           --         --
   net0/v4        static     ok           --         10.53.77.154/24
   net0/v6        addrconf   ok           --         fe80::210:e0ff:fe3a:c4d8/10
net4              ip         ok           --         --
   net4/v4        static     ok           --         10.52.217.14/23
net8              ip         ok           --         --
   net8/v4        static     ok           --         169.254.182.77/24
 #

I was looking to fix it permanently.

5

This should fix it:

ipadm set-addrprop -p prefixlen=22 net0/v4
1 Like
6

It fixed the issue. Thanks for helping.

7

Sorry for continuing old topic, but it was related to same server, so putting my question here.
As bartus suggested, I was able to fix issue. Now I have installed a non global zone on this server, which is having 3 IP's. But those coming in different netmask when I am rebooting server.

# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
lo0:1: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        zone vtlplddp02
        inet 127.0.0.1 netmask ff000000
net0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 10.53.77.154 netmask fffffc00 broadcast 10.53.79.255
        ether 0:10:e0:3a:c4:d8
net0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        zone vtlplddp02
        inet 10.53.77.169 netmask ff000000 broadcast 10.255.255.255
net0:2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        zone vtlplddp02
        inet 10.53.77.170 netmask ff000000 broadcast 10.255.255.255
net0:3: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        zone vtlplddp02
        inet 10.53.77.171 netmask ff000000 broadcast 10.255.255.255
net4: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
        inet 10.52.217.14 netmask fffffc00 broadcast 10.52.219.255
        ether a0:36:9f:14:b8:4c
net8: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
        inet 169.254.182.77 netmask ffffff00 broadcast 169.254.182.255
        ether 2:21:28:57:47:17
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
        inet6 ::1/128
lo0:1: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
        zone vtlplddp02
        inet6 ::1/128
net0: flags=20002004841<UP,RUNNING,MULTICAST,DHCP,IPv6> mtu 1500 index 2
        inet6 fe80::210:e0ff:fe3a:c4d8/10
        ether 0:10:e0:3a:c4:d8
net4: flags=20002000840<RUNNING,MULTICAST,IPv6> mtu 1500 index 3
        inet6 ::/0
        ether a0:36:9f:14:b8:4c
net8: flags=20002000840<RUNNING,MULTICAST,IPv6> mtu 1500 index 4
        inet6 ::/0
        ether 2:21:28:57:47:17
# ipadm
NAME              CLASS/TYPE STATE        UNDER      ADDR
lo0               loopback   ok           --         --
   lo0/v4         static     ok           --         127.0.0.1/8
   lo0/v6         static     ok           --         ::1/128
   lo0/zoneadmd.v4 static    ok           --         127.0.0.1/8
   lo0/zoneadmd.v6 static    ok           --         ::1/128
net0              ip         ok           --         --
   net0/v4        static     ok           --         10.53.77.154/22
   net0/v6        addrconf   ok           --         fe80::210:e0ff:fe3a:c4d8/10
   net0/zoneadmd.v4 static   ok           --         10.53.77.169/8
   net0/zoneadmd.v4a static  ok           --         10.53.77.170/8
   net0/zoneadmd.v4b static  ok           --         10.53.77.171/8
net4              ip         ok           --         --
   net4/v4        static     ok           --         10.52.217.14/22
net8              ip         ok           --         --
   net8/v4        static     ok           --         169.254.182.77/24
#

net0 is fine, other three virtual IP's are for non global zone. Earlier suggested command is not working, seems like I am giving some wrong syntax

# ipadm set-addrprop -p prefixlen=22 net0/zoneadmd.v4
ipadm: set-addrprop: prefixlen: Persistent operation on temporary object
8

You should specify netmask in the zone configuration (zonecfg).

9

Able to fix. Thanks