Ipv6Address.add does not support adding long values

[maschind]

Hi,

the function add(int value) support only an int value to add to a given ip address. However a long would also be feasible to add to an IpV6.

m.

[janvanbesien]

Agreed. Are you interested in providing a patch? It would be good if both add and subtract support long values.

[sunny-shu]

@janvanbesien
hi,janvanbesien.
I've noticed that your project is not very well maintained. i used it in our system,do you need a maintaner to help you handle the issue and review the PR?

[janvanbesien]

All contributions (preferably via a PR) are welcome. Do you have a PR for this issue?