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-rw-r--r--slides/images/ip-header.pgf2
1 files changed, 1 insertions, 1 deletions
diff --git a/slides/images/ip-header.pgf b/slides/images/ip-header.pgf
index 25c506c..35d319a 100644
--- a/slides/images/ip-header.pgf
+++ b/slides/images/ip-header.pgf
@@ -44,7 +44,7 @@ qwordbox/.style={basebox, minimum width=64em},
(0em, -4 * 2em) node[qwordbox] {Source ip address}
(0em, -5 * 2em) node[qwordbox] {Destination ip address}
-(0em, -6 * 2em) node[qwordbox] {Options (variable length)}
+(0em, -6 * 2em) node[qwordbox] {Options (variable length). If IHL > 5}
%(0em, -7 * 2em) node[qwordbox, minimum height=4 em] {Payload}
;