java.net.SocketException: Invalid argument / java.net.NoRouteToHostException:
Network is unreachable
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Key: CASSANDRA-628
URL: https://issues.apache.org/jira/browse/CASSANDRA-628
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: Linux, FreeBSD, (possibly others)
Reporter: Eric Evans
This manifests as either a SocketException that occurs when starting a
cassandra node, or a NoRouteToHostException which occurs when connecting with a
client.
On Linux systems this is caused by IPV6_V6ONLY being set true. The docs
(ipv6(7)) say that when set this causes sockets to be created IPv6 only, while
the previous behavior also allowed sending and receiving packets using an
IPv4-mapped IPv6 address.
The quick fix is to either launch applications using the
-Djava.net.preferIPv4Stack=true property, or on Linux systems set
net.ipv6.bindv6only=0 (see sysctl(8)).
My limited understanding is that the previous behavior (IPV6_V6ONLY=0) was
always considered a hack to be used until IPv6 was more mature/had gained
traction and that a change in defaults was always inevitable, so in the
long-term a Real Fix will be needed.
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6342561
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560056
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