<def f='src/src/sys/netinet/tcp_var.h' l='168' ll='171'/>
<size>8</size>
<doc f='src/src/sys/netinet/tcp_var.h' l='165'>/*
 * SACK option block.
 */</doc>
<mbr r='sackblk::left' o='0' t='tcp_seq'/>
<mbr r='sackblk::right' o='32' t='tcp_seq'/>
