dnaddr_string
extern char *dnaddr_string(u_short);
dnaddr_string(src), dnaddr_string(dst), pktlen);
dnaddr_string(src), blksize, vers, eco, ueco, hello);
printf("src %s fcnval %o", dnaddr_string(src), other);
printf("src %s data %o", dnaddr_string(src), other);
printf("src %s ", dnaddr_string(src));
printf("src %s ", dnaddr_string(src));
vers, eco, ueco, dnaddr_string(src), blksize, priority, hello);
vers, eco, ueco, dnaddr_string(src),
blksize, dnaddr_string(dst), hello, other);