Regular Expression not evaluated properly

[bbs2web]

I have extended the 'Network interfaces for discovery' regular expression to filter out the following two interfaces which appear in Windows 2008 and 2012:

Microsoft ISATAP Adapter
isatap.{801D2331-6EFF-410D-B780-6E6473B5E353}

The regular expression is:

^(Microsoft ISATAP|isatap\.{)

Both adapters continue to be discovered and I have validated it:

[davidh@j14dc3tj ~]# echo -e 'Microsoft ISATAP Adapter\nisatap.{801D2331-6EFF-410D-B780-6E6473B5E353}' | grep -E '^(Microsoft ISATAP|isatap\.{)'
Microsoft ISATAP Adapter
isatap.{801D2331-6EFF-410D-B780-6E6473B5E353}

I assume the curly bracket is perhaps reserved for macros?

[bbs2web]

One has to escape out the curly bracket

Works when one escapes out the curly bracket:

^(Microsoft ISATAP|isatap\.\{)

[cesarsj]

Also adds this filter on discovery. But I'm curious: in which case would I need to monitor this interface? I saw briefly here that ISATAP serves to transition packets from IPv4 to IPv6 addresses.

Why didn't the team that made Template OS Windows add this filter by default? It is another curiosity.