build: Separate ip and ip6 maintainers

Boldly assign IPv6 to Neale and to me.
Ole said so.  Really!

Change-Id: Iaa30a57230558dcf3ee016a94479cac95bb2d50d
Type: make
Signed-off-by: Jon Loeliger <jdl@netgate.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 6c3e36a..a410858 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -127,11 +127,17 @@
 F:	src/vnet/dpo
 F:	src/vnet/adj
 
-VNET IPv4 and IPv6 LPM
+VNET IPv4 LPM
 I:	ip
 M:	Dave Barach <dave@barachs.net>
 F:	src/vnet/ip/
 
+VNET IPv6 LPM
+I:	ip6
+M:	Neale Ranns <nranns@cisco.com>
+M:	Jon Loeliger <jdl@netgate.com>
+F:	src/vnet/ip/
+
 VNET QoS
 I:	qos
 M:	Neale Ranns <nranns@cisco.com>