libnetutil/netutil.cc issues

[Gisle Vanem <gvanem () broadpark no>]

This file has several problems on Win32. 

1st, line 2653:
     Snprintf(protoinfo, sizeof(protoinfo), "SCTP [%s:%d > %s:%d vtag=%lu csum=0x%08lx] IP [%s]",
       srchost, ntohs(sctp->sh_sport), dsthost, ntohs(sctp->sh_dport),
       ntohl(sctp->sh_sum), ntohl(sctp->sh_vtag)
       ipinfo);

Here the values for 'vtag' and 'csum' are swapped.

2nd, it uses format "%ul" several places. Is that the same as "%lu" on
all platforms? Is so, why not use that. My MingW-gcc complains on those
lines.

And finally, ntohl() returns u_long or in_addr_t. So shouldn't we use "%lu" and
not "%u" for "timestamp" and "csum"?

--gv

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