Description of problem: If net.ipv6.bindv6only=1 is enabled in kernel, rpcbind does not bind additionally to IPv4 any address, which lead to problems of RPC processes which want to register. Version-Release number of selected component (if applicable): rpcbind-0.1.4-6.fc7 How reproducible: always Steps to Reproduce: 1. sysctl -w net.ipv6.bindv6only=1 2. service rpcbind restart 3. service nfs restart Actual results: nfs restart hangs, can't connect rpcbind Expected results: rpcbind would bind to IPv4 address also in this case
Try switch the order of the udp/tcp and udp2/tcp6 network ids similar to below and then restart rpcbind: --- /etc/netconfig.orig 2005-05-18 01:10:50.000000000 -0400 +++ /etc/netconfig 2007-07-24 09:45:40.000000000 -0400 @@ -10,10 +10,10 @@ # The <device> and <nametoaddr_libs> fields are always empty in this # implementation. # -udp6 tpi_clts v inet6 udp - - -tcp6 tpi_cots_ord v inet6 tcp - - udp tpi_clts v inet udp - - tcp tpi_cots_ord v inet tcp - - +udp6 tpi_clts v inet6 udp - - +tcp6 tpi_cots_ord v inet6 tcp - - rawip tpi_raw - inet - - - local tpi_cots_ord - loopback - - - unix tpi_cots_ord - loopback - - -
The suggestion in https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=248123#c1 won't help. Here only an IPv4 socket would be openend, regardless whether net.ipv6.bindv6only is 0 or 1 - which is also unexpected. Looks like code needs to be extended.
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