On 31/10/2012 9:48 p.m., Florian Westphal wrote:
Nick Jones <nick.jones@xxxxxxxxxxxxxxx> wrote:
getsockopt(m_sock, SOL_IP, SO_ORIGINAL_DST, &m_server_addr, &addrsize)
but for ipv6 no such option existed.
This adds getsockopt(..., IPPROTO_IPV6, IP6T_SO_ORIGINAL_DST, ...).
Without this, userspace needs to parse /proc or use ctnetlink, which
appears to be overkill.
Doesn't getsockname(2) provide this information?
No. It will show the local address (the address we REDIRECT'ed to).
From the user perspective I don't see why a new code macro is
necessary. Surely it would be sufficient to support:
getsockopt(..., IPPROTO_IPV6, SO_ORIGINAL_DST, ...).
AYJ
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