?? lisa-vi-paper.ps
字號:
1928 X(mail)s600 X659 Y648 X(touch)s888 X($LAMEREPORT)s600 X732 Y648 X(NAME="")s600 X805 Y648 X(while)s888 X(read)s1088 X(DOMAIN)s1368 X(IPADDR)s1648 X(;)s1728 X(do)s600 X878 Y968 X(#)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s3128 X(-)s3168 X(-)s3208 X(-)s3248 X(-)s3288 X(-)s3328 X(-)s600 X951 Y968 X(#)s1048 X(Echo)s1248 X(args)s1448 X(if)s1568 X(verbose)s600 X1024 Y968 X(#)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s3128 X(-)s3168 X(-)s3208 X(-)s3248 X(-)s3288 X(-)s3328 X(-)s600 X1097 Y968 X(if)s1088 X([)s1168 X($VERBOSE)s1528 X(-eq)s1688 X(1)s1768 X(])s1848 X(;)s1928 X(then)s600 X1170 Y1288 X(echo)s1488 X($IPADDR)s1808 X("is)s1968 X(a)s2048 X(potential)s2448 X(lame)s2648 X(delegation)s3088 X(for")s3288 X($DOMAIN)s600 X1243 Y968 X(fi)s600 X1366 Y744 Xf.R 10 Z(The)s871 X(next)s1009 X(thing)s1169 X(we)s1270 X(do)s1359 X(is)s1427 X(lookup)s1634 X(the)s1739 X(SOA)s1895 X(record)s2088 X(for)s2188 X(the)s2294 X(domain)s2494 X(.)s2557 X(We)s2674 X(do)s2764 X(this)s2885 X(so)s2968 X(that)s3093 X(we)s3195 X(can)s3312 X(fetch)s3470 X(an)s3557 X(osten-)s600 X1439 Y(sibly)s758 X(of\256cial)s976 X(e)s1006 X(-mail)s1176 X(address)s1404 X(to)s1483 X(which)s1673 X(to)s1752 X(send)s1901 X(the)s2010 X(mail)s2130 X(.)s2196 X(In)s2278 X(our)s2393 X(experience)s2710 X(the)s2819 X(e)s2849 X(-mail)s3018 X(address)s3245 X(listed)s3418 X(in)s3497 X(an)s3587 X(SOA)s600 X1512 Y(record)s793 X(often)s953 X(is)s1021 X(syntactically)s1384 X(incorrect,)s1662 X(or)s1740 X(contains)s1986 X(some)s2150 X(unusable)s2410 X(address)s2610 X(.)s2672 X(The)s2799 X(script)s2972 X(isn't)s3115 X(too)s3224 X(careful)s3434 X(about)s3606 X(this,)s600 X1585 Y(and)s718 X(so)s799 X(we)s899 X(end)s1017 X(up)s1105 X(seeing)s1298 X(a)s1350 X(fair)s1465 X(number)s1690 X(of)s1767 X(bounces)s2007 X(which)s2192 X(we)s2292 X(then)s2429 X(handle)s2629 X(ourselves)s2881 X(.)s600 X1687 Y728 Xf.CW 10 Z(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X1760 Y728 X(#)s808 X(Lookup)s1088 X(the)s1248 X(SOA)s1408 X(record)s1688 X(form)s1888 X($DOMAIN)s2168 X(.)s2288 X(A)s2368 X(really)s2648 X(broken)s2928 X(name)s600 X1833 Y728 X(#)s808 X(server)s1088 X(many)s1288 X(have)s1488 X(more)s1688 X(than)s1888 X(one)s2048 X(SOA)s2208 X(for)s2368 X(a)s2448 X(domain,)s2768 X(so)s2888 X(exit)s600 X1906 Y728 X(#)s808 X(after)s1048 X(finding)s1368 X(the)s1528 X(first)s1768 X(one)s1888 X(.)s2008 X(Send)s2208 X(it)s2328 X(to)s2448 X(the)s2608 X(local)s2848 X(hostmaster)s600 X1979 Y728 X(#)s808 X(if)s928 X(we)s1048 X(cannot)s1328 X(find)s1528 X(the)s1688 X(proper)s1968 X(one)s2088 X(.)s600 X2052 Y728 X(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X2125 Y728 X(if)s848 X([)s928 X($VERBOSE)s1288 X(-eq)s1448 X(1)s1528 X(])s1608 X(;)s1688 X(then)s600 X2198 Y1048 X(echo)s1248 X("Looking)s1608 X(up)s1728 X(the)s1888 X(hostmaster)s2328 X(for)s2488 X($DOMAIN")s600 X2271 Y728 X(fi)s600 X2344 Y728 X(HOSTMASTER=`qu)s1288 X(ery)s1448 X(-h)s1568 X($DOMAIN)s1888 X(-t)s2008 X(SOA)s2168 X(2>)s2288 X(/dev/null)s2688 X(|)s2768 X(\\)s600 X2417 Y1488 X(awk)s1648 X('/mail)s1928 X(addr/)s2168 X({)s2248 X(print)s2488 X($4)s2608 X(;)s2688 X(exit)s2888 X(}')s3008 X(|)s3088 X(sed)s3248 X(-e)s3368 X('s/)s3488 X(./@/'`)s600 X2490 Y728 X(NAME=`host)s1168 X($IPADDR)s1488 X(2>)s1608 X(/dev/null`)s600 X2563 Y728 X(if)s848 X([)s928 X(-z)s1048 X(""$HOSTMASTER)s1608 X(])s1688 X(;)s1768 X(then)s600 X2636 Y1048 X(if)s1168 X([)s1248 X(-z)s1368 X(""$NAME)s1688 X(])s1768 X(;)s1848 X(then)s600 X2709 Y1368 X(HOSTMASTER="ho)s1928 X(stmaster")s600 X2782 Y1048 X(else)s600 X2855 Y1368 X(HOSTMASTER="po)s1928 X(stmaster@"$NAME)s600 X2928 Y1048 X(fi)s600 X3001 Y728 X(fi)s600 X3124 Y744 Xf.R 10 Z(This)s887 X(is)s956 X(one)s1076 X(of)s1155 X(the)s1261 X(tests)s1405 X(we)s1507 X(make)s1676 X(to)s1752 X(weed)s1917 X(out)s2026 X(the)s2132 X(spurious)s2382 X(lame)s2538 X(delegations)s2843 X(.)s2907 X(There)s3088 X(have)s3239 X(been)s3390 X(cases)s3557 X(where)s600 X3197 Y(a)s654 X(parent)s845 X(server)s1032 X(has)s1145 X(listed)s1315 X(another)s1539 X(nameserver)s1871 X(as)s1951 X(authoritative)s2314 X(for)s2415 X(a)s2469 X(domain,)s2709 X(yet)s2814 X(that)s2938 X(actual)s3122 X(server)s3308 X(does)s3453 X(not)s3561 X(report)s600 X3270 Y(itself)s757 X(as)s835 X(authoritative)s1196 X(for)s1295 X(a)s1347 X(domain)s1547 X(.)s1608 X(This)s1749 X(is)s1817 X(still)s1942 X(a)s1995 X(problem,)s2257 X(and)s2376 X(in)s2451 X(the)s2556 X(future)s2738 X(we)s2839 X(should)s3039 X(do)s3128 X(something)s3429 X(better)s3605 X(here)s600 X3343 Y(than)s737 X(just)s856 X(continue)s1108 X(\(e)s1160 X(.g)s1210 X(.,)s1266 X(send)s1410 X(mail)s1552 X(to)s1626 X(the)s1730 X(parent)s1919 X(domain)s2141 X(telling)s2335 X(them)s2491 X(about)s2661 X(the)s2765 X(problem\))s3009 X(.)s600 X3445 Y728 Xf.CW 10 Z(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X3518 Y728 X(#)s808 X(Find)s1008 X(the)s1168 X(name)s1368 X(associated)s1808 X(with)s2008 X(IP)s2128 X(address)s2448 X($IPADDR)s2728 X(.)s2848 X(Query)s600 X3591 Y728 X(#)s808 X(the)s968 X(nameserver)s1408 X(at)s1528 X(that)s1728 X(address:)s2128 X(If)s2248 X(it)s2368 X(responds)s2728 X(listing)s600 X3664 Y728 X(#)s808 X(itself)s1088 X(as)s1208 X(a)s1288 X(domain)s1568 X(namserver,)s2008 X(then)s2208 X(it)s2328 X(is)s2448 X(lame;)s2688 X(if)s2808 X(it)s2928 X(isn't)s600 X3737 Y728 X(#)s808 X(in)s928 X(the)s1088 X(list,)s1328 X(then)s1528 X(perhaps)s1848 X(the)s2008 X(lame)s2208 X(delegation)s2648 X(alert)s2888 X(was)s600 X3810 Y728 X(#)s808 X(spurious)s1128 X(.)s600 X3883 Y728 X(#)s768 X(-)s808 X(-)s848 X(-)s888 X(-)s928 X(-)s968 X(-)s1008 X(-)s1048 X(-)s1088 X(-)s1128 X(-)s1168 X(-)s1208 X(-)s1248 X(-)s1288 X(-)s1328 X(-)s1368 X(-)s1408 X(-)s1448 X(-)s1488 X(-)s1528 X(-)s1568 X(-)s1608 X(-)s1648 X(-)s1688 X(-)s1728 X(-)s1768 X(-)s1808 X(-)s1848 X(-)s1888 X(-)s1928 X(-)s1968 X(-)s2008 X(-)s2048 X(-)s2088 X(-)s2128 X(-)s2168 X(-)s2208 X(-)s2248 X(-)s2288 X(-)s2328 X(-)s2368 X(-)s2408 X(-)s2448 X(-)s2488 X(-)s2528 X(-)s2568 X(-)s2608 X(-)s2648 X(-)s2688 X(-)s2728 X(-)s2768 X(-)s2808 X(-)s2848 X(-)s2888 X(-)s2928 X(-)s2968 X(-)s3008 X(-)s3048 X(-)s3088 X(-)s600 X3956 Y728 X(if)s848 X([)s928 X($VERBOSE)s1288 X(-eq)s1448 X(1)s1528 X(])s1608 X(;)s1688 X(then)s600 X4029 Y1048 X(echo)s1248 X("Making)s1568 X(sure)s1768 X(that)s1968 X($IPADDR)s2288 X(is)s2408 X(listed)s2688 X(as)s2808 X(a)s2888 X(NS)s3008 X(for)s3168 X($DOMAIN")s600 X4102 Y728 X(fi)s600 X4175 Y728 X(if)s848 X([)s928 X(-n)s1048 X(""$NAME)s1368 X(])s1448 X(;)s1528 X(then)s600 X4248 Y1048 X(query)s1288 X(-n)s1408 X($IPADDR)s1728 X(-h)s1848 X($DOMAIN)s2168 X(2>&1)s2368 X(|)s2448 X(grep)s2648 X("domain)s2968 X(name")s3208 X(|)s3288 X(\\)s600 X4321 Y2568 X(grep)s2768 X(-i)s2888 X($NAME)s3128 X(>)s3208 X(/dev/null)s600 X4394 Y1048 X(if)s1168 X([)s1248 X($?)s1368 X(-eq)s1528 X(1)s1608 X(-a)s1728 X($VERBOSE)s2088 X(-eq)s2248 X(1)s2328 X(])s2408 X(;)s2488 X(then)s600 X4467 Y1368 X(echo)s1568 X($NAME)s1808 X(does)s2008 X(not)s2168 X(seem)s2368 X(to)s2488 X(be)s2608 X(a)s2688 X(nameserver)s3128 X(for)s3288 X($DOMAIN)s600 X4540 Y1368 X(continue)s600 X4613 Y1048 X(fi)s600 X4686 Y728 X(fi)s600 X4967 Yf.B 10 Z(1992)s754 X(LISA)s931 X(VI)s1027 X(\261)s1082 X(October)s1338 X(19)s1404 X(-23,)s1531 X(1992)s1685 X(\261)s1740 X(Long)s1909 X(Beach,)s2122 X(CA)s3621 X(131)s5280 Ypagebot%%Page: 132 6pagetopstdencoding /NTimes-Bold /Times-Bold RE/f.B /NTimes-Bold findfont def f.B 10 Z360 X215 Y(Dealing)s601 X(with)s749 X(Lame)s934 X(Delegations)s360 X448 Y504 Xstdencoding /NTimes-Roman /Times-Roman RE/f.R /NTimes-Roman findfont def f.R 10 Z(We)s620 X(query)s794 X(the)s899 X(listed)s1068 X(nameserver)s1399 X(twice)s1545 X(.)s1607 X(Even)s1767 X(in)s1842 X(the)s1947 X(case)s2086 X(of)s2164 X(a)s2218 X(lame)s2373 X(delegation,)s2693 X(it)s2755 X(may)s2894 X(return)s3077 X(with)s3220 X(authorita-)s360 X521 Y(tive)s485 X(data)s621 X(on)s711 X(the)s817 X(\256rst)s945 X(query)s1120 X(since)s1282 X(it)s1344 X(may)s1483 X(have)s1633 X(just)s1754 X(made)s1923 X(the)s2029 X(query)s2204 X(to)s2280 X(an)s2367 X(authoritative)s2730 X(nameserver)s3038 X(.)s3100 X(If)s3167 X(it)s3228 X(is)s3296 X(a)s3349 X(lame)s360 X594 Y(delegation,)s678 X(then)s815 X(the)s919 X
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -