tftp: do not risk invoking Sorcerer's Apprentice syndrome

examples/udhcp/simple.script: fix incorrect test for $1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/examples/udhcp/simple.script b/examples/udhcp/simple.script
index abf1b6f26..40ee73822 100644
--- a/examples/udhcp/simple.script
+++ b/examples/udhcp/simple.script
@@ -3,7 +3,7 @@
 
 RESOLV_CONF="/etc/resolv.conf"
 
-[ -n "$1" ] || echo "Error: should be called from udhcpc" && exit 1
+[ -n "$1" ] || { echo "Error: should be called from udhcpc"; exit 1; }
 
 NETMASK=""
 [ -n "$subnet" ] && NETMASK="netmask $subnet"
diff --git a/networking/tftp.c b/networking/tftp.c
index 352037f1b..6cd3f69d3 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -501,11 +501,14 @@ static int tftp_protocol(
                                 }
                                 continue; /* send ACK */
                         }
+/* Disabled to cope with servers with Sorcerer's Apprentice Syndrome */
+#if 0
                         if (recv_blk == (block_nr - 1)) {
                                 /* Server lost our TFTP_ACK.  Resend it */
                                 block_nr = recv_blk;
                                 continue;
                         }
+#endif
                 }
 
                 if (CMD_PUT(option_mask32) && (opcode == TFTP_ACK)) {