Starting Eclipse on Lucid using OpenJDK with
eclipse -Djava.net.preferIPv4Stack=true
solves the issue for my system. Apparently the network stack tries to access the Update and Discovery sites with IPv6 instead.
Starting Eclipse on Lucid using OpenJDK with
eclipse -Djava. net.preferIPv4S tack=true
solves the issue for my system. Apparently the network stack tries to access the Update and Discovery sites with IPv6 instead.