¡§Diskless booting¡¨ ´N¬OÅý FreeBSD ¥D¾÷±qºô¸ô ¤W¶}¾÷¡A¨Ã¥B±qºô¸ô¤Wªº server ¤WŪ¨ú¨ä¥L¥²nªºÀɮסA¦Ó«D¥Ñ¥D¾÷ ªºµwºÐ¤W¨ú±o³o¨ÇÀɮסC¸Ô²Óªº¸ê®Æ¥i¥H°Ñ¦Ò FreeBSD ¤â¥UªºµLºÏºÐ¶}¾÷½g ¡C
¬Oªº¡C½Ð°Ñ¦Ò FreeBSD ¤â¥Uªººô¸ô¶i¶¥½g advanced networking¡A¤×¨ä¬O¸ô¥Ñ»P¹h¹D¾¹ routing and gatewaysªº³¡¤À¡C
°ò¥»¤W¡A·|°Ý³oºØ°ÝÃDªº¤H¦b®a¸Ì¦Ü¤Ö¦³¨â¥x¹q¸£¡A¤@¥x¶] FreeBSD ¥t¥~¤@¥x¶] Win95¡F³oÓ·Qªk¬O±N FreeBSD ¥D¾÷³s¤W Internet¡AµM«á³z ¹L³o¥x FreeBSD ¥D¾÷¡AÅý¶] Win95 ªº¹q¸£¯à°÷¤Wºô¡C³oÓ°ÝÃDºâ¬O«e¤@ Ó°ÝÃDªº¤@Ó¯S¨Ò
... µª®×¬O¡G¥i¥Hªº¡I¦b FreeBSD 3.x ª©¤¤¡A¨Ï¥ÎªÌ¼Ò¦¡(user-mode)ªº ppp(8) ¥]§t¤F -nat
¿ï¶µ¡C¦pªG§A¦b /etc/rc.conf
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Windows ¥D¾÷ªº ¸Ü¡A³oÓ°µªkÀ³¸Ó¬O¥i¥H¥¿±`¨Ï¥Îªº¡C
Ãö©ó¥»¥DÃD§ó¸Ô²Óªº¸ê®Æ¥i¥H°Ñ¦Ò Steve Sims ©Ò¼¶¼gªº Pedantic PPP Primer ¤@¤å¡C
¦pªG§A¨Ï¥Îªº¬O®Ö¤ß¼Ò¦¡ (kernel-mode) PPP¡A©ÎªÌ§A¦³°Ï°ì³s½u (Ethernet connection) ¥i³q¹F Internet ªº¸Ü¡A§A±N»Ýn¨Ï¥Î natd(8)¡C½Ð¬d¾\ FAQ ¤¤Ãö©ó natd ªº³¡¤À¡C
¬Oªº¡C§A¥i¥H¬d¬d man pages ¤¤Ãö©ó slattach(8)¡A sliplogin(8)¡Appp(8)¡A¥H¤Î pppd(8) ªº³¡¤À¡C ppp(8) ¤Î pppd(8) ´£¨Ñ¶i¥XÂù¦V³s½uªº¤ä´©¡A¥t¥~ sliplogin(8) ±Mªù´£¨Ñ¶i¤J³s½uªº¤ä´©¡A¦Ó slattach(8) ±Mªù´£¨Ñ¦V¥~³s½uªº¤ä´©¡C
¦pªG§A»Ýn§ó¶i¤@¨Bªº¸ê®Æªº¸Ü,½Ð¬d¾\ FreeBSD ¤â¥U¤¤Ãö©ó PPP »P SLIP ªº»¡©ú¡C
¦pªG§A¥u¯à°÷¹L ¡§shell account¡¨ ³s½u¨ì Internet ªº¸Ü¡A§A¤]³\¥i¥H¸Õ¸Õ net/slirp ³oÓ®M¥óµ{¦¡¡C³oÓ®M¥óµ{¦¡¥i¥H´£¨Ñ§Aªº¹q¸£ª½±µ³s¤W¬Y¨Ç(©wªº)ªA°È ³s½u¡A¦p ftp ¤Î http µ¥µ¥¡C
¦pªG§A¦³¤@ÓªñºÝªº¤lºô¸ô(¦³¤@¥x¥H¤Wªº¾÷¾¹)¡A¦ý¬O§Aªº Internet provider «o¥u¤À°t¤@Ó IP number µ¹§A(©ÎªÌ§A¥u¤À°t¨ì¤@Ó °ÊºAªº IP number)¡A§A¥i¥H°Ñ¦Ò natd(8) ³oÓµ{¦¡¡C natd(8) Åý§A¥i¥H³z¹L³o¤@Ó IP number Åý¾ãÓ¤lºô¸ôªº¹q¸£³£¯à³s¤W internet¡C
ppp(8)
³oÓµ{¦¡¤]´£¨ÑÃþ¦üªº¥\¯à¡A¦pªG§A«ü©w -nat
¿ï¶µ¡Calias library
(libalias(3))
¦b³o¨âÓ³B²z¤è¦¡¤¤³£·|³Q¨Ï¥Î¨ì¡C
½Ð°Ñ¦Ò¤â¥U¤¤Ãö©ó PLIP section ªº³¡¤À¡C
¦]¬°¤£»Ýn¡I¦b Berkeley ºô¸ô¬[ºc¤¤¡A¥u¦³ kernel µ{¦¡½X¥i¥Hª½ ±µ¦s¨úºô¸ô¬É±¥d¡C½Ð°Ñ¦Ò /etc/rc.network ³o ÓÀɮשM manual pages ¨ú±o»P¨ä¥L¤£¦Pºô¸ôµ{¦¡¡C§ó¶i¤@¨Bªº¸ê°T¡G¦p ªG§Aı±o§A§¹¥þ·d²V¤Fªº¸Ü¡A±zÀ³¸Ó§ä¤@¥»»P¨ä¥L BSD ¬ÛÃö§@·~¨t²Îºô¸ô ºÞ²z¦³Ãö®Ñ¨Ó°Ñ¦Ò¡F°£¤F¤Ö¼ÆÅãµÛªº¤£¦P¥~¡AFreeBSD ªººô¸ôºÞ²z°ò¥»¤W©M SunOS 4.0 ©M Ultrix ¬O¤@¼Ëªº¡C
¦pªG§Aªº alias ¦ì§}¸ò§A¥Ø«eºô¸ô¤¶±ªº¦ì§}¦b¦P¤@Ó¤lºô¸ô¤Uªº ¸Ü¡A¥[¤J¤@Ó netmask 0xffffffff ¦b§Aªº ifconfig(8) command-line¡A½d¨Ò¦p¤U¡G
# ifconfig ed0 alias 192.0.2.2 netmask 0xffffffff
¤£µMªº¸Ü¡A´N¦p¦P¥[¤J¤@Ó·sªººô¸ô¦ì§}¤@¼Ë¿é¤J§Aªººô¸ô¦ì§}»P¤l ºô¸ô¾B¸n¡G
# ifconfig ed0 alias 172.16.141.5 netmask 0xffffff00
¦pªG±z·Q¨Ï¥Î¨ä¥Lªº port¡A§A¥²¶·¦b ifconfig(8) ªº©R¥O¤¤ «ü©wÃB¥~ªº°Ñ¼Æ¡C¤º©wªº port ¬O link0¡Cn¨Ï¥Î AUI port ¥N´À BNC port ªº¸Ü¡A§ï¥Î link2¡C³o¨Ç flags À³¸Ó§ïÅÜifconfig_* ªºÅܼƨӫü©w¡A §A¥i¥H¦b /etc/rc.conf ³oÓÀɮ׸̱§ä¨ì (½Ð°Ñ¦Ò rc.conf(5))¡C
§Ú̥Χt»W¤@ÂIªº»¡ªk¡A¬Y¨Ç PC ªººô¸ô¥d¤ñ¨ä¥Lªº¦n¡A³oºØª¬ªp¦b ³y¦¨ NFS ³oºØ¹ïºô¸ô±Ó·Pªºµ{¦¡¦³®É·|¥X²{°ÝÃD¡C
°Ñ¦Ò the Handbook entry on NFS ¥HÀò±o³oÓ¥DÃDªº§ó¦h¸ê°T¡C
¬Y¨Çª©¥»ªº Linux NFS µ{¦¡½X¥u±µ¨ü privileged port ªº mount request¡F¸Õ¥Î³o¦æ«ü¥O¬Ý¬Ý
# mount -o -P linuxbox:/blah /mnt
¶] SunOS 4.X ªº Sun ¤u§@¯¸¥u±µ¨ü¨Ó¦Û privileged port ªº mount request¡F¸Õ¥Î³o¦æ«ü¥O¬Ý¬Ý
# mount -o -P sunbox:/blah /mnt
12.13. ¬°¤°»ò mountd ¤@ª½°¥s»¡ ¡§can't change attributes¡¨ ¦Ó¥B§Ú¤@ª½¬Ý¨ì ¡§bad exports list¡¨ ³oÓ°T®§¦b§Úªº FreeBSD NFS ¦øªA¾¹¤W¡H
³oÓ°ÝÃD³Ì±`µo¥Íªºì¦]¬O¦b©ó¤£¤F¸Ñ /etc/exports ªº¥¿½T®æ¦¡¡C½Ð¸ÔŪ exports(5) ¥H¤Î¤â¥U¤¤Ãö©ó NFS ªº³¡¤À¡A¯S§O¬Oconfiguring NFS³o¤@¬q¡C
§â TCP extensions ¨ú®ø¡A³oÓ³]©w¦b /etc/rc.conf ¸Ì±(°Ñ¦Ò rc.conf(5)) §â ¥H¤U³oÓȳ]¦¨ NO¡G
tcp_extensions=NO
Xylogic ªº Annex ¥D¾÷¤]¦³¬Û¦Pªº°ÝÃD¡A±zn°µ¬Û¦Pªº×§ï¤~¯à³s ¤W³o¨Ç¥D¾÷¡C
FreeBSD 2.0 ¥H«áªºª©¥»¤º©w³£¦³ ¤ä´© Multicast host ¾Þ§@¡C¦pªG ±z·Q±N±zªº¥D¾÷³]©w¦¨ multicast router ªº¸Ü¡A±z¥²¶·«·s compile ±z ªº kernel¡A¥[¤J MROUTING ªº¿ï¶µ¡A¨Ã¥B°õ¦æ mrouted(8) FreeBSD 2.2 ¤Î¤§«áªºª©¥»·|¦b¶}¾÷®É°õ¦æ mrouted(8) ¦pªG¦b /etc/rc.conf ¤¤ mrouted_enable ³]©w¬° "YES"
MBONE ªº¦UºØ¤u¨ã¥i¥H¦b¥LÌ ports ¤U©ÒÄÝ¥s°µ mbone ¥Ø¿ý ¤¤§ä¨ì¡C¦pªG±z¦b§äµø°T·|ijªº¤u¨ã¦p vic ¥H¤Î vatªº¸Ü¡A¨ì¨ºÃä§ä§ä§a¡I
¥H¤U¬O Glen Foster <gfoster@driver.nsta.org>
´£¨Ñªº²M³æ¡G
Table 12-1. Network cards based on the DEC PCI chipset
Vendor | Model |
---|---|
ASUS | PCI-L101-TB |
Accton | ENI1203 |
Cogent | EM960PCI |
Compex | ENET32-PCI |
D-Link | DE-530 |
Dayna | DP1203, DP2100 |
DEC | DE435, DE450 |
Danpex | EN-9400P3 |
JCIS | Condor JC1260 |
Linksys | EtherPCI |
Mylex | LNP101 |
SMC | EtherPower 10/100 (Model 9332) |
SMC | EtherPower (Model 8432) |
TopWare | TE-3500P |
Znyx (2.2.x) | ZX312, ZX314, ZX342, ZX345, ZX346, ZX348 |
Znyx (3.x) | ZX345Q, ZX346Q, ZX348Q, ZX412Q, ZX414, ZX442, ZX444, ZX474, ZX478, ZX212, ZX214 (10mbps/hd) |
§A¤]³\·|µo²{n³sªº¾÷¾¹¨ä¹ê¬O¦b¥t¤@Óºô°ì¡CÁ|Ó¨Ò¤l¡A°²³]§A¬O¦b foo.bar.edu ³oÓºô°ì¤¤¡A·Qn³s¨ì¦b¤@¥x¥s mumble ªº¥D¾÷¡A¥L¦b example.org ºô°ì¤U¡A §A¥²¶·¥Î Fully-Qualified Domain Name mumble.example.org¡A¦Ó¤£¬O¥u¥Î mumble¡C
¶Ç²Îªº BSD BIND resolver ¤¹³\¥Î³oºØ¤è¦¡¸Ñ¥X¾÷¾¹ªº¦ì§}¡A¦ý¬O FreeBSD ¤ºªþ bind (see named(8)) ª©¥»¤º©w¤è¦¡¡A«h¬O°£¤F§A©Ò¦bªººô°ì¥H¥~¡A¤£¤ä´©¨ä¥L«D FQDN ªºÁY¼g¡C ©Ò¥H¦p mumble ¥²¶·¦b mumble.foo.example.org¡A§_«h´N·|±qºô°ìªº³Ì©³ ¼h¶}©l§ä¡C
³o©M¥ý«eªº°µªk¤£¦P¡A¤]´N¬O¤£¥Î mumble.example.org¡A©M mumble.edu Ä~Äò·j´M¡C ¬Ý¤@¤U RFC 1535¡A¸Ì±¦³´£¨ì¬°¤°»ò¤§«eªº°µªk¤£¦n¡A¬Æ¦Üºâ¬OÓ¦w¥þ º|¬}¡C
³o¸Ì¦³Ó¤£¿ùªº¸Ñªk, §A¥i¥H¥[¤J¤@¦æ
search foo.example.org example.org
instead of the previous
domain foo.example.org
¦b§Aªº /etc/resolv.conf Àɮפ¤ (½Ð°Ñ¦Ò resolv.conf(5))¡C¦ý¬On½T©w·j´M¶¶§Ç¤£·|¹H¤Ï RFC 1535 ©Ò¿×ªº ¡§boundary between local and public administration¡¨¡C
¦pªG¦b½sĶ kernel ®É¥[¤J IPFIREWALL ¿ï¶µ¡A ½Ðª`·N 2.1.7R ¤º©w¬O©Úµ´©Ò¦³¥¼¸g®Ö㪺ºô¸ô«Ê¥](¦ý¦b¶}µo 2.1-STABLE ®É§ï±¼¤F)¡C
I¦pªG¤£¤p¤ß§Ë¿ù¤F firewall ªº³]©w¡A§A¥i¥H¥H root °õ¦æ¥H¤U©R¥Oºô¸ô¥\¯à´N·|«ì´_¥¿±`¡G
# ipfw add 65534 allow all from any to any
¤]¥i¥H¦b /etc/rc.conf ¥[¤J firewall_type="open" ªº¿ï¶µ¡C
¦pªG·Qª¾¹D¦p¦ó³]©w FreeBSD firewall¡A½Ð°Ñ¦Ò ¤â¥U¤¤¬ÛÃö³¹¸`¡C
½Ð°Ñ¦Ò¤â¥U¤¤ Firewalls ³¹¸`¡A¯S§O¬O IPFW Overhead & Optimization ³o¤@¬q¡C
¥i¯à¬O§A°£¤FÂà°e«Ê¥]¥H¥~ÁÙÃB¥~·Q¶i¦æ¦ì§}ÂàĶ (network address translation, NAT)¡A¡§fwd¡¨ ³W«h©Ò¶i ¦æªº°Ê§@´N¦p¦P¦r±©Ò¥Ü¡F¶ÈÂà°e«Ê¥]¡A¥¦¨Ã¤£·|¥h×§ï«Ê¥]¤¤ªº¸ê®Æ¡C °²³]§Ú̦³¦p¤Uªº³W«h¡G
01000 fwd 10.0.0.1 from any to foo 21
·í¤@Ó³q©¹¯S©w¥Ø¼Ð¦ì§} foo ªº«Ê¥] °e¹F¥D¾÷®É¡A®Ú¾Ú³o±ø³W«h¡A«Ê¥]±N³QÂà°e¦Ü 10.0.0.1¡A¦ý¬O¥¦ªº¥Ø¼Ð¦ì§}«o¤´µM¬O foo¡I«Ê¥]ªº¥Ø¼Ð¦ì§}¨Ã ¨S¦³ §ó§ï¬° 10.0.0.1¡C¤j³¡¤Àªº¥D¾÷·|±N«Ê¥]¥á±ó¡A ¦]¬°¥L̨䣬O³oӥؼЦì§}¡C¦]¦¹¡A¨Ï¥Î ¡§fwd¡¨ ³W«h ®É©¹©¹¤£¦p¨Ï¥ÎªÌ©Ò¹w´Áªº¨º¯ë¶¶§Q¡C³oºØ¦æ¬°¬O¨t²Î¯S©Ê¡A¦Ó«D¿ù»~¡C
°Ñ¦Ò Ãö©óªA°ÈÂà¦Vªº±`¨£°Ý µª¶°¡A natd(8) ¤â¥U¡A©ÎªÌ¬O¨Ï¥Î ports collection ¤¤³\ ¦hªA°ÈÂà¦Vªº¤u¨ã¨Ó¥¿½Tªº§¹¦¨§A·Q¶i¦æªº¤u§@¡C
¦b ports ¥Ø¿ýªº¡§sysutils¡¨¤ÀÃþ¤¤¦³Ó¥s socket ªº®M¥ó¡A¥i¥HÀ°§AÂà¦V FTP ©Î¨ä¥LÃþ¦üªº ºô¸ôªA°È¡C¥un§â¸Óºô¸ôªA°Èªº©R¥O§ï¦¨©I¥s socket §Y¥i¡A¦p¤U©Ò¥Ü¡G
ftp stream tcp nowait nobody /usr/local/bin/socket socket ftp.example.com ftp
¨ä¤¤ ftp.example.com »P ftp ¤À§O¬O³QÂà¨ìªº¾÷¾¹©M port ¦WºÙ¡C
FreeBSD ¤W¦³¤T®MÀW¼eºÞ²z¤u¨ã¡G dummynet(4) ¤w¸g¾ã¦X¶i¤J FreeBSD ¨t²Î(§ó¸Ô²Óªº¥Î³~, ipfw(4)); ALTQ ¥i¥H§K¶O¨Ï¥Î¡AEmerging Technologies ±À¥Xªº Bandwidth Manager «h¬O°Ó¥Î³nÅé¡C
§A°õ¦æ¤F¤@Ó»Ýn¬f§JµÜ«Ê¥]¹LÂo¾¹ (Berkeley Packet Filter) ªº µ{¦¡ (bpf(4))¡A¦ý¬O§A¦b kernel ¤¤¨S¦³±Ò°Ê¥¦¡C§â¤U±³o¤@¦æ¥[ ¤J kernel ³]©wÀɤ¤¡A½sͤ@Ó·sªº kernel¡G
pseudo-device bpf # Berkeley Packet Filter
¦b«·s¶}¾÷¤§«á¡AÁÙn°µ¥X device node¡A¦b /dev ¤U°õ¦æ¡G
# sh MAKEDEV bpf0
¦pªG·Qn§ó¶i¤@¨Bª¾¹D¦p¦ó°µ¥X¦UºØ device node¡A½Ð°Ñ¾\ Handbook Ãö©ó¶gÃä¸`ÂIªº»¡©ú ¡C
¨Ï¥Î SMBFS ¤u¨ã²Õ¡C³o®M¤u¨ã²Õ¤¤ ¥]§t¤F¤@¨t¦Cªº kernel ×§ïÁÙ¦³¨Ï¥ÎªÌªº¤u¨ãµ{¦¡(userland programs)¡C ³o¨Çµ{¦¡©M¸ê°T¦b ports ¦¬Âä¤ net/smbfs ¤U¥i¥H§ä¨ì¡C¦b 4.5-RELEASE ¤§«áªºª©¥»«h¬O¨t²Î¤¤¤º«Ø¡C
³o¬O¨t²Î®Ö¤ß§i¶D§A¦³¬Y¨Ç¬¡°Ê¤Þµo¥¦°e¥X¤ñ¥¦©Ò»{¬°À³¸Ó°e¥X§ó ¦hªº ICMP ©Î TCP «¸m°T®§ (RST)¡CICMP ¦^À³°T®§±`±`¬O¦]¬°¦³¤H¹Á ¸Õ³s±µ¥¼³Q¨Ï¥Îªº UDP ³q°T°ð¡CTCP «¸m°T®§«h¬O¦³¤H¹Á¸Õ³s±µ¥¼¶} ©ñ TCP ³q°T°ð³y¦¨ªºµ²ªG¡C¥H¤U³o¨Ç¬¡°Ê¥i¯à´N¬O³y¦¨³o¨Ç°T®§ªºì¦]¡G
¼É¤OªkªºªA°È²Õµ´§ðÀ»(DoS)¤è¦¡ (¬Û¸û©ó°w¹ï¯S®í®zÂI¨Ï¥Î³æ¤@«Ê¥]ªº§ðÀ»¤è¦¡)¡C
¤j¶qªº³q°T°ð±½´y(¬Û¸û©ó¶È¹Á¸Õ¤Ö¼Æªº±`¨£ªA°È³q°T°ð)¡C
¥X²{ªº¼Æ¦r¤¤²Ä¤@Ó¥Nªí®Ú¾Ú³o¨Ç¬y¶q kernel À³¸Ó°e¥Xªº«Ê¥]¼Æ¡A ²Ä¤GӼƦr«h¬O kernel
¥Ø«e¨î³Ì¤jµo°e¼Æ¡C§A¥i¥H§Q¥Î sysctl ×§ï net.inet.icmp.icmplim
ÅܼÆÈ¨Ó§ó§ï³Ì¤jÈ¡CÁ| ¨Ò¨Ó»¡,¦pªG§Æ±æ×§ï¨î¬°
300 packets per second¡G
# sysctl -w net.inet.icmp.icmplim=300
¦pªG§A¤£·Q¦b¨t²Î¬ö¿ý¤¤¬Ý¨ì³o¨Ç°T®§¡A¦ý¬O¤´µM§Æ±æ«O«ù¦^À³ªº ¨îªº¸Ü¡A§A¥i¥H§Q¥Î sysctl
×§ï net.inet.icmp.icmplim_output
ÅܼƨӨú®ø³o¨Ç°T ®§¡G
# sysctl -w net.inet.icmp.icmplim_output=0
³Ì«á¡A¦pªG§A·Q¨ú®ø³o¨Ç¨îªº¸Ü¡A§A¥i¥H³]©w net.inet.icmp.icmplim
(¦p¤W¨Ò©Ò¥Ü) ¬° 0¡C°ò©ó¤Wz²z¥Ñ¡A§Ṳ́£«ØÄ³§A¨ú®ø³o¨Ç¨î¡C
³o¥Nªí§Aªº°Ï°ìºô¸ô³s½u¤W¦³¤@¨Ç³]³Æ¨Ï¥Î FreeBSD ¬Ý¤£À´ªº MAC ®æ¦¡¡C³o³q±`¬O¥Nªí¦³¤H¦b§Aªº°Ï°ìºô¸ô¤W¶i¦æ¹êÅç¡A³Ì±`¨£ªº´N¬O cable modem ªº³s½u¡C³o°T®§µL®`¡A¦Ó¥BÀ³¸Ó¤£¦Ü©ó¼vÅT¨ì FreeBSD ¥D ¾÷ªº®Ä¯à¡C
º¥ý¡A¬Ý¬Ý¿ù»~ªº°T®§¬O§_¦p¤U¡G
/usr/libexec/ld-elf.so.1: Shared object "libXaw.so.6" not found
³oºØ¿ù»~°T®§¥Nªí§A¥D¾÷¤W¦w¸Ëªº net/cvsup ¨S¦³¥]§t XFree86 ®M¥ó¡C¦pªG§A·Qn¨Ï¥Î CVSup ¤º«Øªº¹Ï§Î¤¶± GUI ªº¸Ü¡A§A»Ýn¦w¸Ë XFree86¡C¦¹¥~¡A¦pªG§A¥u·Q¥H©R¥O¦C¤è ¦¡¨Ï¥Î CVSup ªº¸Ü¡A§AÀ³¸Ó¥ý²¾°£¤§«e ¦w¸Ëªº®M¥ó¡C¨Ã¦w¸Ë net/cvsup-without-gui ³o®M ³nÅé¡C¦b FreeBSD ¤â¥U¤¤ CVSup ¬q¸¨¤¤¦³§ó¸Ô²Óªº»¡©ú¡C
¥»¤å¤Î¨ä¥L¤å¥ó¡A¥i¥Ñ¦¹¤U¸ü¡Gftp://ftp.FreeBSD.org/pub/FreeBSD/doc/¡C
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<questions@FreeBSD.org>¡C
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