Annotated edit history of
EAFNOSUPPORT version 4, including all changes.
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PerryLorier |
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!!!Address family not supported by protocol |
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JohnMcPherson |
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This is an error you get when you try to connect(2) or bind(2) a socket to an address where that address doesn't make sense. For example trying to bind a socket created with PF_INET (Protocol Family Internet) to a AF_UNIX (Address Family Unix Domain Socket) address, it just doesn't make sense. Alternatively you forgot to fill in the sin_family or uin_family field in your address structure. Either way the programmer screwed up. |
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JohnMcPherson |
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This can also occur if the OperatingSystem does not support a particular protocol. For example: |
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PerryLorier |
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<verbatim> |
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JohnMcPherson |
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$ ping6 ::1 |
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ping6: socket: Address family not supported by protocol |
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$ strace ping6 ::1 |
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... |
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socket(PF_INET6, SOCK_RAW, 58) = -1 EAFNOSUPPORT (Address family not |
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supported by protocol) |
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... |
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PerryLorier |
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</verbatim> |
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JohnMcPherson |
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In this case, the machine does not have [IPv6] support, but a program tried to use it. |
