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extern void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
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extern int icmp_rcv(struct sk_buff *skb);
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extern void icmp_err(struct sk_buff *, u32 info);
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extern int icmp_init(void);
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extern void icmp_out_count(struct net *net, unsigned char type);
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void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
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int icmp_rcv(struct sk_buff *skb);
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void icmp_err(struct sk_buff *skb, u32 info);
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void icmp_out_count(struct net *net, unsigned char type);
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#endif /* _ICMP_H */