vrouter should not forward loopback, unspecified and router-anycast addresses

[Senthilnathan Murugappan]

vRouter should not forward packets with src/dst address of unspecified(::), loopback and router-anycast addresses.

01:06:27.864898 00:e0:81:c5:32:5b > 4c:96:14:58:9f:f0, ethertype IPv4 (0x0800), length 82: (tos 0x0, ttl 64, id 23502, offset 0, flags [none], proto GRE (47), length 68)
    5.5.5.15 > 5.5.5.1: GREv0, Flags [none], proto MPLS unicast (0x8847), length 48
        MPLS (label 16, exp 0, [S], ttl 64)
        (hlim 64, next-header unknown (59) payload length: 0) fe80::4f:33ff:fea4:5b55 > ::: no next header
        0x0000: 4500 0044 5bce 0000 402f 0aa4 0505 050f
        0x0010: 0505 0501 0000 8847 0001 0140 6000 0000
        0x0020: 0000 3b40 fe80 0000 0000 0000 004f 33ff
        0x0030: fea4 5b55 0000 0000 0000 0000 0000 0000
        0x0040: 0000 0000

01:12:50.271007 00:e0:81:c5:32:5b > 4c:96:14:58:9f:f0, ethertype IPv4 (0x0800), length 146: (tos 0x0, ttl 64, id 23510, offset 0, flags [none], proto GRE (47), length 132)
    5.5.5.15 > 5.5.5.1: GREv0, Flags [none], proto MPLS unicast (0x8847), length 112
        MPLS (label 16, exp 0, [S], ttl 64)
        (hlim 64, next-header ICMPv6 (58) payload length: 64) fe80::4f:33ff:fea4:5b55 > ::1: [icmp6 sum ok] ICMP6, echo request, seq 1
        0x0000: 4500 0084 5bd6 0000 402f 0a5c 0505 050f
        0x0010: 0505 0501 0000 8847 0001 0140 6000 0000
        0x0020: 0040 3a40 fe80 0000 0000 0000 004f 33ff
        0x0030: fea4 5b55 0000 0000 0000 0000 0000 0000
        0x0040: 0000 0001 8000 4627 0700 0001 81a1 5054
        0x0050: 0000 0000 09ca 0b00 0000 0000 1011 1213
        0x0060: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223
        0x0070: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233
        0x0080: 3435 3637

[Prabhakaran Ganesan (gprabhak)]

Anand,

    Can you please do the needful on this?

- Prabhakar