RFR: 8251031: Some vmTestbase/nsk/monitoring/RuntimeMXBean tests fail with hostnames starting from digits

Tue Aug 4 09:08:28 UTC 2020

Hi all,

JBS:    https://bugs.openjdk.java.net/browse/JDK-8251031
Webrev: http://cr.openjdk.java.net/~jiefu/8251031/webrev.00/

Some vmTestbase/nsk/monitoring/RuntimeMXBean tests failed in our test infrastructure.
The reason is that these tests reject hostnames starting with digits.

However, hostnames starting from digits are actually valid according to RFC1123 [1][2].
It would be better to fix it.

Thanks a lot.
Best regards,
Jie

[1] https://tools.ietf.org/html/rfc1123#page-13
[2] https://en.wikipedia.org/wiki/Hostname