[3199] Added definition of the DHCPv4 option 66.

src/lib/dhcp/dhcp4.h

@@ -125,6 +125,7 @@ enum DHCPOptionType {
     DHO_DHCP_CLIENT_IDENTIFIER       = 61,
     DHO_NWIP_DOMAIN_NAME             = 62,
     DHO_NWIP_SUBOPTIONS              = 63,
+    DHO_TFTP_SERVER_NAME             = 66,
     DHO_USER_CLASS                   = 77,
     DHO_FQDN                         = 81,
     DHO_DHCP_AGENT_OPTIONS           = 82,

src/lib/dhcp/std_option_defs.h

@@ -163,6 +163,7 @@ const OptionDefParams OPTION_DEF_PARAMS4[] = {
       OPT_BINARY_TYPE, false, NO_RECORD_DEF, "" },
     { "nwip-domain-name", DHO_NWIP_DOMAIN_NAME, OPT_STRING_TYPE, false, NO_RECORD_DEF, "" },
     { "nwip-suboptions", DHO_NWIP_SUBOPTIONS, OPT_BINARY_TYPE, false, NO_RECORD_DEF, "" },
+    { "tftp-server-name", DHO_TFTP_SERVER_NAME, OPT_STRING_TYPE, false, NO_RECORD_DEF, "" },
     { "user-class", DHO_USER_CLASS, OPT_BINARY_TYPE, false, NO_RECORD_DEF, "" },
     { "fqdn", DHO_FQDN, OPT_RECORD_TYPE, false, RECORD_DEF(FQDN_RECORDS), "" },
     { "dhcp-agent-options", DHO_DHCP_AGENT_OPTIONS,

src/lib/dhcp/tests/libdhcp++_unittest.cc

@@ -732,6 +732,9 @@ TEST_F(LibDhcpTest, stdOptionDefs4) {
     LibDhcpTest::testStdOptionDefs4(DHO_NWIP_SUBOPTIONS, begin, end,
                                     typeid(Option));
 
+    LibDhcpTest::testStdOptionDefs4(DHO_TFTP_SERVER_NAME, begin, end,
+                                    typeid(OptionString));
+
     LibDhcpTest::testStdOptionDefs4(DHO_USER_CLASS, begin, end,
                                     typeid(Option));