Two minor(?) DNS errors

I am getting 2 DNS errors in my logs. Can someone tell me what they mean, if I need to clean them up and, if so, how? 1) Using RFC 1035 TTL semantics 2) omitting IPv4 interface en0 from localnets ACL: address mask not contiguous They don't seem to be causing any problems but it would be nice to at least know if I need to worry about them. TIA.