When ip6tables is not present, the tab group was not initialized,
causing the iptables status display to be empty with certain themes.
Manually mark the pane active in this case to avoid the problem.
Fixes: #5040
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Modern browsers allow decomposing table markup equally well as nested div
constructs, therefor migrate our <div> table markup to actual <table> tags
but keep the old table/tr/th/td CSS classes for now to allow for a smooth
theme transition.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Rework the regexp pattern to allow both IP addresses without mask
and IPv6 addresses with netmask instead of CIDR notation.
Fixes: #2495, #2530
Fixes: f6bfac211 ("luci-mod-status: rework iptables status page")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
