When saving a GIF interface, do not allow the user to enter a subnet directly in the address box. The subnet is determined by the "GIF tunnel subnet" drop-down. Fixes #7789
(cherry picked from commit 6d028dc26c129ce1b0b25551142819772664f1e5) (cherry picked from commit c7fd6ec9b196b0d7c37d14dad13f745dab82420d)
Related issues
Bug #7789: GIF interface page does not validate IPv6 addresses
When saving a GIF interface, do not allow the user to enter a subnet directly in the address box. The subnet is determined by the "GIF tunnel subnet" drop-down. Fixes #7789
(cherry picked from commit 6d028dc26c129ce1b0b25551142819772664f1e5)
(cherry picked from commit c7fd6ec9b196b0d7c37d14dad13f745dab82420d)