Re: "kernel: rtfree: 0xc3c4bd98 has 2 refs" on recent current

Here is an incoming ICMP packet (the last one) causing the "rtfree has
2 refs" message (00:19:b9:5a:a3:10 is my host):


17:47:46.915491 00:0c:29:b2:14:38 > 00:19:b9:5a:a3:10, ethertype IPv4
(0x0800), length 70: (tos 0x0, ttl  64, id 48899, offset 0, flags
[none], proto: ICMP (1), length: 56) 192.168.0.25 > 192.168.0.55: ICMP
redirect 192.168.0.1 to host 192.168.0.1, length 36
        (tos 0x0, ttl  16, id 0, offset 0, flags [none], proto: UDP
(17), length: 328) 192.168.0.55.68 > 192.168.0.1.67:  [|bootp]
        0x0000:  4500 0038 bf03 0000 4001 3a21 c0a8 0019  E..8...._at_.:!....
        0x0010:  c0a8 0037 0501 48f7 c0a8 0001 4500 0148  ...7..H.....E..H
        0x0020:  0000 0000 1011 281d c0a8 0037 c0a8 0001  ......(....7....
        0x0030:  0044 0043 0134 efa2                      .D.C.4..
17:47:46.942512 00:19:b9:5a:a3:10 > 00:50:bf:b1:34:a3, ethertype IPv4
(0x0800), length 70: (tos 0x0, ttl  64, id 207, offset 0, flags
[none], proto: ICMP (1), length: 56) 192.168.0.55 > 192.168.0.1: ICMP
192.168.0.55 udp port 68 unreachable, length 36
        (tos 0x0, ttl  64, id 14203, offset 0, flags [none], proto:
UDP (17), length: 334) 192.168.0.1.67 > 192.168.0.55.68:  [|bootp]
        0x0000:  4500 0038 00cf 0000 4001 f86d c0a8 0037  E..8...._at_..m...7
        0x0010:  c0a8 0001 0303 0dbe 0000 0000 4500 014e  ............E..N
        0x0020:  377b 0000 4011 c09b c0a8 0001 c0a8 0037  7{.._at_..........7
        0x0030:  0043 0044 013a ed7d                      .C.D.:.}
17:47:46.942528 00:19:b9:5a:a3:10 > 00:50:bf:b1:34:a3, ethertype IPv4
(0x0800), length 70: (tos 0x0, ttl  64, id 208, offset 0, flags
[none], proto: ICMP (1), length: 56) 192.168.0.55 > 192.168.0.1: ICMP
192.168.0.55 udp port 68 unreachable, length 36
        (tos 0x0, ttl  64, id 14204, offset 0, flags [none], proto:
UDP (17), length: 334) 192.168.0.1.67 > 192.168.0.55.68:  [|bootp]
        0x0000:  4500 0038 00d0 0000 4001 f86c c0a8 0037  E..8...._at_..l...7
        0x0010:  c0a8 0001 0303 0dbe 0000 0000 4500 014e  ............E..N
        0x0020:  377c 0000 4011 c09a c0a8 0001 c0a8 0037  7|.._at_..........7
        0x0030:  0043 0044 013a ed7d                      .C.D.:.}

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/tut