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sd-dhcp6-client: allow multiple clients on host

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We need to enable SO_REUSEADDR in order for several sockets to be allowed
to bind to the same port (even on different links).
This commit is contained in:
Tom Gundersen 2015-11-16 19:05:27 +01:00
parent 62379e884e
commit 6506063f8f
1 changed files with 7 additions and 6 deletions
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13
src/libsystemd-network/dhcp6-network.c
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@ -45,16 +45,13 @@ int dhcp6_network_bind_udp_socket(int index, struct in6_addr *local_address) {
int r, off = 0, on = 1;
if (local_address)
memcpy(&src.in6.sin6_addr, local_address,
sizeof(src.in6.sin6_addr));
src.in6.sin6_addr = *local_address;
s = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
IPPROTO_UDP);
s = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, IPPROTO_UDP);
if (s < 0)
return -errno;
r = setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &pktinfo,
sizeof(pktinfo));
r = setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &pktinfo, sizeof(pktinfo));
if (r < 0)
return -errno;
@ -66,6 +63,10 @@ int dhcp6_network_bind_udp_socket(int index, struct in6_addr *local_address) {
if (r < 0)
return -errno;
r = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
if (r < 0)
return -errno;
r = bind(s, &src.sa, sizeof(src.in6));
if (r < 0)
return -errno;