diff -r a3685be3f14a -r 60c9ef5a7bd3 src/base/inet.hh
--- a/src/base/inet.hh	Wed Aug 29 19:55:15 2012 +0100
+++ b/src/base/inet.hh	Wed Aug 29 19:55:38 2012 +0100
@@ -380,8 +380,6 @@
 
 uint16_t cksum(const TcpPtr &ptr);
 
-typedef Range<uint16_t> SackRange;
-
 struct TcpOpt : public tcp_opt
 {
     uint8_t type() const { return opt_type; }
@@ -393,7 +391,6 @@
 
     uint16_t mss() const { return ntohs(opt_data.mss); }
     uint8_t wscale() const { return opt_data.wscale; }
-    bool sack(std::vector<SackRange> &vec) const;
     uint32_t echo() const { return ntohl(opt_data.echo); }
     uint32_t tsval() const { return ntohl(opt_data.timestamp[0]); }
     uint32_t tsecr() const { return ntohl(opt_data.timestamp[1]); }
diff -r a3685be3f14a -r 60c9ef5a7bd3 src/base/inet.cc
--- a/src/base/inet.cc	Wed Aug 29 19:55:15 2012 +0100
+++ b/src/base/inet.cc	Wed Aug 29 19:55:38 2012 +0100
@@ -254,29 +254,6 @@
     return true;
 }
 
-bool
-TcpOpt::sack(vector<SackRange> &vec) const
-{
-    vec.clear();
-
-    const uint8_t *data = bytes() + sizeof(struct tcp_hdr);
-    int all = len() - offsetof(tcp_opt, opt_data.sack);
-    while (all > 0) {
-        const uint16_t *sack = (const uint16_t *)data;
-        int len = sizeof(uint16_t) * 2;
-        if (all < len) {
-            vec.clear();
-            return false;
-        }
-
-        vec.push_back(RangeIn(ntohs(sack[0]), ntohs(sack[1])));
-        all -= len;
-        data += len;
-    }
-
-    return false;
-}
-
 int 
 hsplit(const EthPacketPtr &ptr)
 {