RFR: 8338630: Test java/nio/channels/DatagramChannel/SendReceiveMaxSize.java timeout [v2]

[SendaoYan]

> Hi,
> On linux test environments which has docker service, `ifconfig` shows that `docker0` appears to be a virtual ethernet bridge which is created by the docker host. And the `docker0` virtual ethernet bridge may cause test `java/nio/channels/DatagramChannel/SendReceiveMaxSize.java` bind `docker0` ander network port. 
> I think we should just skip "docker0" interfaces when looking for an IPv4 address for tests.
> Change has been verified, test fix only, the risk is low.

SendaoYan has updated the pull request incrementally with two additional commits since the last revision:

 - macos may have docker0 interface
 - macos may have docker0 interface

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/20658/files
  - new: https://git.openjdk.org/jdk/pull/20658/files/583aaa1a..d5c3f695

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20658&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20658&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/20658.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20658/head:pull/20658

PR: https://git.openjdk.org/jdk/pull/20658