当我使用“ 192.169.201.60”作为主地址时，Sctp初始化不携带ipv4地址参数，但是当我使用“ 172.17.42.3”时，它工作正常。
这种情况一直在发生，我对此行为感到困惑。
因此，当源ip地址为172.17.42.3时，它可以正常工作，但当源ip地址为192.169.201.60时，则不能正常工作。
当包含“ IPv4地址参数”时，请参见tcpdump中的以下块：
Frame 2338: 100 bytes on wire (800 bits), 100 bytes captured (800 bits)
Linux cooked capture
Internet Protocol Version 4, Src: 172.17.42.3, Dst: 172.17.42.5
Stream Control Transmission Protocol, Src Port: 54314 (54314), Dst Port: 3868 (3868)
Source port: 54314
Destination port: 3868
Verification tag: 0x00000000
[Association index: 0]
Checksum: 0x00000000 [unverified]
[Checksum Status: Unverified]
INIT chunk (Outbound streams: 10, inbound streams: 65535)
Chunk type: INIT (1)
Chunk flags: 0x00
Chunk length: 52
Initiate tag: 0xc29ebee4
Advertised receiver window credit (a_rwnd): 32767
Number of outbound streams: 10
Number of inbound streams: 65535
Initial TSN: 3242577996
IPv4 address parameter (Address: 172.17.42.3)
IPv4 address parameter (Address: 192.169.201.60)
Supported address types parameter (Supported types: IPv4)
ECN parameter
Forward TSN supported parameter
See below chunk from tcpdump when "IPv4 address parameter" not included:
Frame 2340: 84 bytes on wire (672 bits), 84 bytes captured (672 bits)
Linux cooked capture
Internet Protocol Version 4, Src: 192.169.201.60, Dst: 192.169.201.62
Stream Control Transmission Protocol, Src Port: 43213 (43213), Dst Port: 3868 (3868)
Source port: 43213
Destination port: 3868
Verification tag: 0x00000000
[Association index: 1]
Checksum: 0xcdb3ff13 [unverified]
[Checksum Status: Unverified]
INIT chunk (Outbound streams: 10, inbound streams: 65535)
Chunk type: INIT (1)
Chunk flags: 0x00
Chunk length: 36
Initiate tag: 0x1d8a2c1b
Advertised receiver window credit (a_rwnd): 32767
Number of outbound streams: 10
Number of inbound streams: 65535
Initial TSN: 3195157733
Supported address types parameter (Supported types: IPv4)
ECN parameter
Forward TSN supported parameter
所以我觉得两种情况下的sctp行为都应该很好。