fixed broken link

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Hash: SHA1

Hi there...

The link at -2.2 Prior knowledge- section, to the Rusty Russell's networking-concepts-HOWTO seems to be broken...

- -- diff output --

index ab12035..b3ef8b1 100644

- --- a/lartc.db
+++ b/lartc.db
@@ -201,7 +201,7 @@ Here are some other references which might help
teach you more:
<VariableList>
<VarListEntry>
<Term>
- - <ULink
URL="http://netfilter.samba.org/unreliable-guides/networking-concepts-HOWTO/index.html">
+ <ULink
URL="http://www.netfilter.org/documentation/HOWTO/networking-concepts-HOWTO.html">
Rusty Russell's networking-concepts-HOWTO</ULink>
</Term>
<ListItem>
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JB
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