add multicast ip address into kernel route table
11,605
I'm afraid I don't understand multicast too well, but the problem that your command has is the '-interface'. It should instead look like this:
sudo route -nv add -net 228.0.0.4 dev eth0
From the man route
pages, an example:
route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
This is an obscure one documented so people know how to do it.
This sets all of the class D (multicast) IP routes to go via
"eth0". This is the correct normal configuration line with a
multicasting kernel.
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Updated on September 18, 2022Comments
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macavity almost 2 years
i want to add an IP (multicast 228.0.0.4) in the range of 224.0.0.0 – 239.255.255.255 in the kernel routes table, so i used
sudo route -nv add -net 228.0.0.4 -interface eth0
but it gives me:
root@macavity:/home/gaiz# route -nv add -net 228.0.0.4 -interface eth0 route: invalid option -- 'i' route: invalid option -- 't' route: invalid option -- 'r' route: invalid option -- 'f' route: invalid option -- 'a' route: invalid option -- 'c' Usage: route [-nNvee] [-FC] [<AF>] List kernel routing tables route [-v] [-FC] {add|del|flush} ... Modify routing table for AF. route {-h|--help} [<AF>] Detailed usage syntax for specified AF. route {-V|--version} Display version/author and exit. -v, --verbose be verbose -n, --numeric don't resolve names -e, --extend display other/more information -F, --fib display Forwarding Information Base (default) -C, --cache display routing cache instead of FIB <AF>=Use '-A <af>' or '--<af>'; default: inet List of possible address families (which support routing): inet (DARPA Internet) inet6 (IPv6) ax25 (AMPR AX.25) netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP) x25 (CCITT X.25)
my route table:
root@macavity:/home/gaiz# netstat -r Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface default dsldevice.lan 0.0.0.0 UG 0 0 0 wlan0 192.168.1.0 * 255.255.255.0 U 0 0 0 wlan0
and my current network configuration information
root@macavity:/home/gaiz# ifconfig -a eth0 Link encap:Ethernet HWaddr 24:b6:fd:4a:15:ca inet6 addr: fe80::26b6:fdff:fe4a:15ca/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:268 errors:0 dropped:0 overruns:0 frame:0 TX packets:107 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:16136 (16.1 KB) TX bytes:15102 (15.1 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:2444 errors:0 dropped:0 overruns:0 frame:0 TX packets:2444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:393755 (393.7 KB) TX bytes:393755 (393.7 KB) wlan0 Link encap:Ethernet HWaddr e0:06:e6:79:60:49 inet addr:192.168.1.64 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::e206:e6ff:fe79:6049/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:92082 errors:0 dropped:0 overruns:0 frame:0 TX packets:63686 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:112279263 (112.2 MB) TX bytes:8760358 (8.7 MB)
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macavity almost 10 yearsnow it says invalid argument root@macavity:/home/gaiz# sudo route -nv add -net 228.0.0.4 dev eth0 SIOCADDRT: Invalid argument
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Charles Green almost 10 years@macavity Modifying answer